Gseb Ssc Science Test Papers

GSEB SSC SCIENCE TEST PAPERSfor the students of Class 10 of Gujarat Secondary Education Board(GSEB),India

Saturday, September 25, 2010

TEST PAPER 2SCIENCE TEST PAPER 2[100 MARKS, FULL COURSE]

PART : A

There are 50 questions. Choose appropriate alternative for each question and accordingly mark the answer in the separately given OMR sheet by black-ink pen. Each question carries 1 mark.

1. The most important property of nanomaterials is_____.[A] force [B] friction [C} pressure [D] temperature

2. The refractive index of a rarer medium with respect to a denser medium is_____.[A] 1 [B] greater than 1 [C] smaller than 1 [D] negative

3. _____ is not a primary colour of white light.[A] Red [B] Blue [C] Violet [D] Green

4. Work done on an electric charge is stored in it as_____.[A] potential energy [B] kinetic energy [C] thermal energy [D] nuclear energy

5. Which of the following is not correct for electrical work?[A] W = VQ [B] W = VIt [C] W = I2Rt [D] W = I2RQ

6. How many electrons should flow in one second to contribute electric current of 1 ampere?[A] 6.25 x 1018 [B] 6.25 x 1019 [C] 1.60 x 1018 [D] 1.60 x 1018

7. The magnetic field of a solenoid is quite similar to that of_____8. [A] a straight conductor [B] a horse-shoe magnet [C] a bar magnet [D] magnetic needle

9. The insulation cover on the earth wire is_____.[A] red [B] black [C] green [D] white

10. _____ is the unit of frequency of alternating current.[A] Weber [B] Hertz [C] Tesla [D] Ampere

11. A high tide occurs_____.

[A] on every new moon day [B] on every full moon day [C] both A and B [D] everyday

12. Who discovered the laws of planetary motion?[A] Plato [B] Newton [C] Galileo [D] Kepler

13. The mass of earth is_____ times the mass of mercury. [A] 10 [B] 14 [C] 18 [D] 22

14. The tail of a comet is the longest when_____.15. [A] it is nearest to Sun [B] it is farthest from Sun [C] it is far from Earth [D] it is near Jupiter

16. A rocket works on the principle of_____.17. [A] Newton's first law of motion [B] Newton's second law of motion [C] Newton's third law of motion [D] First law of thermodynamics

18. During a chemical reaction, the concentration of reactants_____.[A] does not change [B] increases [C] decreases [D] never decreases

19. The acid-base theory of Lewis is based on_____.20. [A] proton transfer [B] litmus test [C] theory of ionisation [D] transfer of electron pair

21. Preparation of vegetable ghee from vegetable oil is_____ reaction.[A] chlorination [B] sulphonation [C] hydrolysis [D] hydrogenation

22. Which acid is present in the stomach of humans?[A] sulphuric acid [B] hydrochloric acid [C] nitric acid [D] citric acid

23. Brine is_____.[A] Na2CO3 [B] NaHCO3 [C] NaCl [D] Na2SiO3

24. Which substance is a salt of weak acid and strong base?[A] Slaked lime [B] Gypsum [C] Bleaching powder [D] Washindg soda

25. Helmets are made from_____.[A] manganese steel [B] chromium steel [C] cobalt steel [D] silicon steel

26. The melting point of lime is_____ °C[A] 1000 [B] 1200 [C] 1539 [D] 2000

27. Liquefaction method is used for the purification of metals with_____.28. [A] high melting point [B] low melting point [C] high boiling point [D] low boiling point

29. The true order of reactivity of metals is_____.[A] Mg>Al>Zn>Fe [B] Mg>Zn>Fe>Al [C] Al>Mg>Zn>Fe [D] Zn>Mg>Al>Fe

30. The formula of rust is_____.[A] FeSO4 [B] Fe2O3.xH2O [C] Fe3O4.xH2O [D] FeCO3

31. How many nonmetals are in solid state?[A] 11 [B] 12 [C] 13 [D] 14

32. Sulphur belongs to_____ group in periodic table. [A] Boron [B] Carbon [C] Oxygen [D] Halogen

33. _____ is a neutral oxide.[A] CO2 [B] NO2 [C] CO [D] SO3

34. The formula of butanol is_____.[A] CH3OH [B] C2H5OH [C] C3H7OH [D] C4H9OH

35. Yeast contains_____.36. [A] invertase [B] zymase [C] both invertase and zymase [D] neither invertase nor zymase

37. The boiling point of acetone is_____°C[A] 40 [B] 48 [C] 56 [D] 64

38. Which of the following is a condensation polymer?[A] Nylon [B] PVC [C] Natural rubber [D] TEFLON

39. The autotrophic organisms contain_____ pigment. [A] methylene blue [B] chlorophyll [C] phenolphthalin [D] carbon black

40. The energy released during cellular respiration is stored in_____.[A] ATP [B] glucose [C] lungs [D] ileum

41. Which organism shows parasitic mode of nutrition?[A] Cascuta [B] Plasmodium [C] ascaris [D] all three

42. Gaseous exchange occurs through _____ in earthworm.[A] lungs [B] skin [C] nephridia [D] mouth

43. _____ is associated with transport of water in plants.[A] Xylem [B] Phloem [C] Chloroplast [D] Aerenchyma

44. Urine mainly consists of_____.[A] uranium [B] urea [C] CO2 [D] sugar

45. _____ is/are synthesized at the shoot and root tips of plants.[A]Glucose [B] Starch [C] Hormones [D] Minerals

46. Plant hormones are called _____.[A] hypohormones [B] metahormones [C] phytohormones [D] cytohormones

47. Nerve mass in invertebrates is called_____.[A] neuron [B] pelvis [C] brain [D] ganglion

48. Which of the following shows thigmonastic response?[A] Sun flower [B] Insectivorous plant [C] Lotus [D] Bryophyllum

49. The structural and functional unit of the nervous system in multicellular organisms is _____.[A] neuron [B] brain [C] spinal cord [D] pons

50. Which of the following shows spore formation?[A] Amoeba [B] Mucor [C] Plasmodium [D] Paramoecium

51. In a normal healthy woman, menstruation occurs every_____ days.[A] 14 [B] 28-32 [C] 21-24 [D] 270

52. The chromatids are joined to each other by_____.[A] chromosome [B] centromere [C] gene [D] DNA

53. Which of the following is a greenhouse gas?[A] Methane [B] Oxygen [C] Nitrogen [D] Hydrogen

54. Compounds of _____ cause Minamata disease.[A] Mercury [B] Cadmium [C] Cobalt [D] Arsenic

55. Which rays strike the earth due to depletion of ozone layer?[A] Infrared [B] Microwaves [C] Ultraviolet [D] Visible

56. Oxygen Pond method has been developed by _____.[A] NACO [B] UNESCO [C] GROFED [D] NEERI

PART : BThere are 18 questions in all. Total Marks for Part-B are 50 and Time period is 2 hours.

SECTION : A [5 x 2 marks, Total marks: 10]1. Explain the use of nanotechnology in diagnostics.

2. Distinguish between real image and virtual image (two points)

OR

Mention the characteristics of image formed by a plane mirror.

3. Explain primary and composite colours giving examples.

4. Mention characteristics of Jovian planets.

OR

Describe four uses of artificial satellites.

5. Mention the criteria of chemical equilibrium.

SECTION : B [5 x 2 marks, Total marks: 10]

6. Write the formula of bleaching powder and mention its three uses.

7. Write about harmful effects of ethyl alcohol.

OR

Write a note on vulcanisation of rubber.

8. Describe aerobic respiration.

OR

Describe mechanism of breathing.

9. Describe photoperiodism.

10. Write a note on puberty.

SECTION : C [5 x 3 marks, Total marks: 15]

11. Describe mirage with diagram.

12. Derive the formula for equivalent resistance when three resistances are connected in parallel.

OR

Three resistors of 5Ω, 10Ω and 30Ω are connected in parallel with a battery of 12 V. Find (i) the current passing through each resistor (ii) the total current of the circuit (iii) the equivalent resistance of the circuit.

13. Describe the magnetic field due to a current-carrying coil with diagram.

14. Describe preparation of hydrogen gas in laboratory with diagram.

15. Describe tracheids with neat diagram.

OR

Write a note on blood clotting.

SECTION : D [3 x 5 marks, Total marks: 15]

16. Describe with diagram the process of preparation of charcoal from wood.

OR

Describe nuclear reactor with diagram.

17. Describe Hall-Heroult process for obtaining aluminum from alumina.

18. Write a note on Watson-Crick model for structure of DNA with diagram.

Posted by manojsir at 11:16 AM 0 comments

Sunday, August 29, 2010

PLEASE READ THIS FIRST...Recently the pattern for 100 mark exam papers has been modified by the GSEB. Accordingly, we will have PART-A of 50 MCQs (50 marks) and PART-B of descriptive answers consisting of 2-mark, 3-mark & 5-mark questions (50 marks). I am preparing new question papers as per new pattern. As soon as I finish, I shall start posting new set of papers.Posted by manojsir at 10:41 AM 2 comments

Friday, February 6, 2009

TEST PAPER 32 : CHAPTER 18 : ENVIRONMENT & ENVIRONMENTAL PROBLEMS : 25 MARKSThere are 13 questions in all and time limit is 45 minutes.

SECTION - A : CHOOSE APPROPRIATE ALTERNATIVE : [1 mark each, Total marks 3]

1. Which one is a greenhouse gas ?

A. Methane

B. Oxygen

C. Nitrogen

D. Hydrogen

2. World Environment Day is observed on...

A. 5th March

B. 15th April

C. 15th May

D. 5th June

3. ______ is not an environmental problem.

A. Wastage of water

B. Conservation of water

C. Deforestation

D. Land erosion

SECTION - B : ANSWER IN SHORT : [1 mark each, Total marks 3]

4. What is studied in environmental biology ?

5. Mention the major reason for environmental problems.

6. What is eutrophication ?

SECTION - C : ANSWER IN BRIEF : [2 marks each, Total marks 8]

7. Mention types of environment with examples.

8. Explain : Acid rain.

9. Write about biodegradable pollutants.

10. Explain : Environmental balance.

SECTION - D : ANSWER THE FOLLOWING : [3 marks each, Total marks 6]

11. Describe harmful effects of water pollution.

12. What is air pollution ? Describe methods of controlling gaseous pollutants.

SECTION - E : ANSWER IN DETAIL : [5 marks each, Total marks 5]

13. Describe prevention and control of water pollution.


TEST PAPER 31 : CHAPTER 17 : HEREDITY & EVOLUTION : 25 MARKSThere are 15 questions in all and time limit is 45 minutes.


1. Which of the following is not a nitrogenous base ?

A. Adenine

B. Guanine

C. Cytosine

D. Deoxyribose sugar

2. ______ gave Germplasm theory.

A. Lamarck

B. Weismann

C. Darwin

D. Hugo De Vries

3. Fossils of _____ provide evidence of evolution as the connecting link between birds and reptiles.

A. Dinosaurs

B. Lizard

C. Archeopteryx

D. Ostrich

4. Which principle was given by Darwin ?

A. Inheritance of acquired characters

B. Germplasm theory

C. Mutation theory

D. Theory of natural selection


5. Give biological meaning of variation.

6. What are homologous chromosomes ?

7. What is the biological name of fruit fly ?

8. What is a retrovirus ?


9. Explain : Heredity.

10. Explain : Mutation.

11. Describe the role of environment in sex determination.

12. Write in brief about components of nucleotides.


13. Mention types of chromosome and describe any two.

14. Mention different evidences to support evolution and describe comparative embryology.

15. Describe the Watson-Crick model for the structure of DNA(diagram not essential).


TEST PAPER 30 : CHAPTER 16 : REPRODUCTION IN ORGANISMS : 25 MARKSThere are 13 questions in all and time limit is 45 minutes.


1. Yeast reproduces by ______.

A. budding

B. fission

C. regeneration

D. spore formation

2. The 14th day of sexual cycle in human female is important because on that day...

A. ovulation occurs

B. she becomes pregnant

C. menstrual flow starts

D. she gives birth to a child

3. Embryo is protected during development by...

A. placenta

B. umbilical cord

C. amnion

D. oviduct


4. Give two examples of organisms reproducing by fission.

5. What is fragmentation ?

6. What is gestation ?


7. What is reproduction ? Mention its importance.

8. Mention accessory reproductive glands and their function in human male.

9. Mention symptoms of STDs.

10. Describe budding in hydra.


11. Describe reproduction by spore formation.

12. Describe methods of birth control.


13. Describe sexual cycle in human female.


TEST PAPER 29 : CHAPTER 15 : CONTROL & COORDINATION IN LIVING ORGANISMS : 25 MARKSThere are 13 questions in all and time limit is 45 minutes.


1. The sunflower plant bends towards the sun. It is _____ response.

A. thigmonastic

B. seismonastic

C. thermonastic

D. photonastic

2. The space between meninges is filled with...

A. lymph

B. blood plasma

C. cerebrospinal fluid

D. ACTH

3. Which organ is not controlled by autonomous nervous system ?

A. Heart

B. Uterus

C. Glands

D. Eyes


4. What is stimulus ?

5. What does nervous system of insects consist of ?

6. What is the function of cerebellum ?


7. What is tropism ? Mention its types.

8. Describe photoperiodism.

9. Mention characteristics of hormones.

10. Mention four endocrine glands. Why is pituitary gland called master gland ?


11. Describe : Nastic movement.

12. Write a note on autonomous nervous system.


13. Describe : Spinal cord and reflex action.


TEST PAPER 28 : CHAPTER 14 : TRANSPORTATION, CIRCULATION & EXCRETION IN ORGANISMS : 25 MARKSThere are 13 questions in all and time limit is 45 minutes.


1. Which one is not a property of blood plasma ?

A. It is pale yellow.

B. It is nonliving.

C. It is acidic.

D. It carries hormones.

2. Which of the following is true ?

A. Heart purifies blood.

B. Heart separates excretory wastes from blood.

C. Heart circulates blood.

D. Heart supplies oxygen to blood.

3. Where are antigens located ?

A. On WBC

B. On RBC

C. On platelets

D. In blood plasma


4. Where are plant hormones synthesised ?

5. Define : Blood transfusion.

6. Why is the circulation of blood through heart called 'double circulation'?


7. Write a note on tracheids.

8. Write a note on blood platelets.

9. Draw a neat diagram of human excretory system.

10. Describe the process of formation of urine.


11. Describe clotting of blood.

12. Write a note on lymphatic system.


13. Describe excretion and osmoregulation.


TEST PAPER 27 : CHAPTER 13 : NUTRITION & RESPIRATION IN ORGANISMS : 25 MARKSThere are 13 questions in all and time limit is 45 minutes.


1. The layer of dead cells having tiny openings on the roots is called...

A. root nodule

B. stomata

C. chlorenchyma

D. lenticels

2. Cockroach shows _____ mode of nutrition.

A. herbivorous

B. carnivorous

C. omnivorous

D. parasitic

3. The function of incisors is ______.

A. cutting

B. tearing

C. grinding

D. chewing


4. What are autotrophic organisms ?

5. How does the rate of photosynthesis depend upon the intensity of light ?

6. Through what does the frog respire ?


7. Eaplain : Saprophytic nutrition.

8. Describe exchange of gases in tissues.

9. Describe aerobic respiration.

10. Describe respiration in insects.


11. Describe the light phase of photosynthesis.

12. Describe nutrition in amoeba with diagram.


13. Describe human respiratory system.


TEST PAPER 26 : CHAPTER 12 : ORGANIC COMPOUNDS : 25 MARKSThere are 13 questions in all and time limit is 45 minutes.


1. Oxidation of ethanol in presence of alkaline potassium permanganate gives...

A. acetaldehyde

B. ethane

C. potassium ethoxide

D. acetic acid

2. The enzyme which converts milk into curd is...

A. lactase

B. invertase

C. zymase

D. cellulase

3. Vinegar is...

A. methanol

B. ethanal

C. methanoic acid

D. ethanoic acid


4. Mention the boiling point of ethanol.

5. Write the equation for the combustion of ethanol.

6. What is formalin ?


7. Explain : Functional group.

8. What is a polymer ? Give its classification.

9. Distinguish between soap and detergent(2 points).

10. Describe preparation of formaldehyde and write its reaction with hydrogen cyanide.


11. Describe preparation of ethanol from sugar(molasses).

12. Describe preparation of polyester and write its uses.


13. Describe preparation of acetic acid by fermentation and by chemical synthesis. Write its physical properties and its reaction with ethanol in presence of concentrated sulphuric acid.


Wednesday, February 4, 2009

TEST PAPER 25 : CHAPTER 11 : NONMETALS : 25 MARKSThere are 13 questions in all and time limit is 45 minutes.


1. The formula of carbonic acid is ______.

A. H2CO3

B. H3CO2

C. HCO3

D. H2CO2

2. How many nonmetals are in gaseous state ?

A. 7

B. 8

C. 9

D. 10

3. The transition temperature of sulphur is ___ °C.

A. 90

B. 92

C. 94

D. 96


4. Give the example of a nonmetal which conducts heat & electricity.

5. Why is ammonia not collected by downward displacement of water ?

6. Which crystalline form of sulphur is the most stable ?


7. Write chemical equations : (i) When phosphorus pentoxide is dissolved in water.(ii) When ammonia reacts with oxygen in presence of platinum.

8. Mention four uses of ammonia.

9. Mention four physical properties of sulphur.

10. Describe preparation of sulphur from natural gas and oils.


11. Describe allotropes of sulphur(diagrams not necessary).

12. Describe manufacture of sulphuric acid by contact process.


13. Describe laboratory preparation of hydrogen with diagram.


TEST PAPER 24 : CHAPTER 10 : METALS : 25 MARKSThere are 13 questions in all and time limit is 45 minutes.


1. Liquefaction method is used for the purification of metals with ______.

A. high melting point

B. low melting point

C. high boiling point

D. low boiling point

2. Pure gold is ______ carats.

A. 20

B. 22

C. 24

D. 100

3. The melting point of iron is ______ °C.

A. 1539

B. 1639

C. 1739

D. 1839


4. Define : Ore.

5. What do we mean by metallurgy ?

6. What is rust chemically ?


7. Write a note on magnetic separation.

8. Explain calcination with example.

9. Explain the importance of ultrapure metals.

10. What is an alloy ? Give two examples.


11. Describe Bayer's process to obtain pure alumina from bauxite.

12. Describe reactions of metals with water giving proper chemical equations.


13. Mention two ores of iron and write their formulae. Describe the manufacture of iron using blast furnace(diagram not essential).


TEST PAPER 23 : CHAPTER 9 : SOME IMPORTANT CHEMICAL COMPOUNDS : 25 MARKSThere are 13 questions in all and time limit is 45 minutes.


1. Steel is an alloy of ______.

A. iron and silica

B. iron and nickel

C. iron and chromium

D. iron and carbon

2. The formula of baking soda is ______.

A. NaHCO3

B. Na2CO3.10H2O

C. Na2CO3

D. Na2SiO3

3. ______ is used for making permanent magnets.

A. Manganese steel

B. Chromium steel

C. Cobalt steel

D. Silicon steel


4. What is the chemical name of washing soda ?

5. How much carbon does steel contain ?

6. What is the full form of RCC ?


7. Describe how bleaching powder is manufactured.

8. Mention four uses of lime.

9. Mention the composition of stainless steel and one important property.

10. Write a few points on coloured glass.


11. Describe ammonia soda process to manufacture washing soda.

12. Describe manufacture of glass.


13. Write a note on Plaster of Paris explaining its preparation, properties and uses.


TEST PAPER 22 : CHAPTER 8 : RATE OF CHEMICAL REACTION-CHEMICAL EQUILIBRIUM : 25 MARKSThere are 13 questions in all and time limit is 45 minutes.


1. During a chemical reaction, the concentration of reactants...

A. does not change

B. increases

C. decreases

D. may increase

2. ______ defined pH in 1909.

A. Arrhenius

B. Sorensen

C. Lewis

D. Haber

3. Preparation of vegetable ghee from vegetable oil is ______ reaction.

A. chlorination

B. sulphonation

C. hydrogenation

D. hydrolysis


4. Why are the definitions of acid and base by Robert Boyle called 'operational' type ?

5. Define : Molarity.

6. State the Law of Mass Action.


7. Define rate of reaction and state its unit.

8. Describe Arrhenius' concept of acid and base.

9. What is a reversible reaction ? Give an example.

10. Mention the factors affecting the rate of a chemical reaction.


11. Explain chemical equilibrium with an nexample.

12. Derive the expression for the equilibrium constant for the reaction A + B ----> C + D.


13. Explain : Dynamic nature of chemical equilibrium.


TEST PAPER 21 : CHAPTER 7 : UNIVERSE : 25 MARKSThere are 13 questions in all and time limit is 45 minutes.


1. Sun rises in the west on ______.

A. Mercury

B. Mars

C. Pluto

D. Venus

2. 1 light year = ______ km.

A. 9.46 x 1011

B. 9.46 x 1012

C. 4.96 x 1011

D. 4.96 x 1012

3. The minimun velocity required for a satellite to remain in the orbit is ______.

A. 8 km/s

B. 8 km/h

C. 800 km/h

D. 800 m/s


4. What is 'photosphere' ?

5. Name two planets which do not have natural satellites.

6. What is the speed of revolution of Sun ?


7. Define solar system and write the names of the planets in the ascending order of their distance from sun.

8. Write four points about saturn.

9. Mention two major disasters of space shuttles.

10. Mention uses of artificial satellites in communication.


11. Explain how the space shuttle is brought back from space.

12. Write six major points about asteroids.


13. Write a detailed note on comets.


Sunday, February 1, 2009

TEST PAPER 20 : CHAPTER 6 : ENERGY SOURCES : 25 MARKSThere are 13 questions in all and time limit is 45 minutes.


1. How much solar energy reaches earth's surface ?

A. 3.8 x 1024 J/s

B. 3.8 x 1026 J/s

C. 1.7 x 1017 J/s

D. 1.7 x 1026 J/s

2. The number of carbon atoms in hydrocarbon molecule of kerosene is...

A. 5 - 8

B. 8 - 11

C. 10 - 14

D. 12 - 16

3. The calorific value of biogas is ______ kJ/g.

A. 30 - 35

B. 35 - 40

C. 40 - 45

D. 45 - 50


4. what is the full form of LPG ?

5. What is the benefit of Ocean Thermal Energy ?

6. What is the boiling range of diesel ?


7. How are smokeless chulhas more efficient than the traditional chulhas ?

8. Give reason : The calorific value of wood is lower than that of the hydrocarbons.

9. Explain how the energy obtained from fusion is better than that obtained from fission reactions ?

10. Mention limitations of windmills.


11. Explain construction and working of solar cells.

12. Describe an experiment to find the calorific value of wax.


13. What is chain reaction ? Describe ideal conditions to support a nuclear chain reaction.


TEST PAPER 19 : CHAPTER 5 : MAGNETIC EFFECTS OF ELECTRIC CURRENT : 25 MARKSThere are 13 questions in all and time limit is 45 minutes.


1. Who was the first scientist to observe the magnetic effect of electric current ?

A. Faraday

B. Ampere

C. Oersted

D. Volta

2. The direction of magnetic field lines is taken...

A. north pole to south pole

B. south pole to north pole

C. entering both poles

D. leaving both poles

3. The insulation cover on live wire is...

A. red

B. black

C. green

D. white


4. What is induced current ?

5. What do we mean by frequency of current ?

6. Which metal is generally used to make a fuse wire ?


7. Explain : Right-hand thumb rule with diagram.

8. Mention two advantages of alternating current.

9. Domestic appliances are joined in parallel. Why ?

10. Explain : Electromagnetic induction.


11. Write a note on solenoid.

12. Draw a schematic diagram of domestic wiring.


13. Describe electric motor with diagram.


TEST PAPER 18 : CHAPTER 4 : ELECTRICITY : 25 MARKSThere are 13 questions in all and time limit is 45 minutes.


1. When resistors are connected in series...

A. voltage drop is uniform

B. current is uniform

C. both voltage and current are uniform

D. neither of the two is uniform

2. 1 A = ______ mA.

A. 100

B. 1000

C. 10(-3)

D. 106

3. Equivalent resistance of resistances in parallel is...

A. smaller than the smallest resistance

B. greater than the greatest resistance

C. an average of all resistances

D. algebraic sum of all resistances


4. What type of charge does a glass rod acquire when it is rubbed with silk cloth ?

5. Define : Electroplating.

6. Current flows in a wire. Can we call the wire charged ? Why ?


7. Mention two disadvantages of series connection.

8. Explain the cause of resistance in a conductor. What are conductors and insulators ?

9. Define electric power and write different equations of power.

10. A lamp of resistance 20 ohm is joined to a battery of 12 V. Find the value of the resistance to be connected in series with the lamp in order to get current of 0.5 A.


11. Define electric current and explain the difference of electron current and conventional current.

12. What is series connection? Derive the formula of equivalent resistance for three resistors connected in series.


13. Describe Ohm's experiment and write its conclusion.


Wednesday, January 28, 2009

TEST PAPER 17 : CHAPTER 3 : DISPERSION OF LIGHT & OPTICAL INSTRUMENTSThere are 13 questions in all and time limit is 45 minutes.


1. Arranging in the ascending order of wavelength, which one is true ?

A. Blue, Green, Red

B. Orange, Green, Red

C. Blue, Yellow, Green

D. Orange, Yellow, Green

2. Green + magenta = ______.

A. Cyan

B. Yellow

C. Red

D. White

3. In spectrum obtained with prism, which colour is deviated maximum ?

A. Violet

B. Green

C. Orange

D. Red


4. Define : Dispersion of light.

5. Why does a green leaf appear green ?

6. Mention the principle of simple microscope.


7. Why does dispersion of light occur ? Explain.

8. Explain : Primary and composite colours.

9. Why do defects of vision arise ?

10. Explain : Complementary colours.


11. Explain : Farsightedness with diagram.

12. Draw the ray diagram to show the working of a compound microscope(diagram only).


13. Explain subtractive method of mixing of pigments.


TEST PAPER 16 : CHAPTER 2 : LIGHT-REFLECTION AND REFRACTION : 25 MARKSThere are 13 questions in all and time limit is 45 minutes.


1. The speed of light is ______ in vacuum.

A. 3 x 105 m/s

B. 3 x 108 m/s

C. 3 x 108 km/s

D. 3 x 106 km/s

2. We can see objects because of ______.

A. reflection

B. refraction

C. transmission

D. dispersion

3. Which of the following is a true statement?

A. The power of a lens is always positive.

B. The power of a lens is always negative.

C. The power of a convex lens is positive.

D. The power of a concave lens is positive.


4. Define : Radius of curvature of a mirror.

5. Mention the position, nature and the size of the image formed by a convex lens when the object is placed at 2F1.

6. What will be the power of a convex lens of focal length 40 cm ?


7. Describe irregular reflection.

8. Draw the ray diagram to show the position, nature and the size of the image when an object is placed between C and F of a concave mirror.

9. State the laws of refraction.

10. An object of height 6 cm is placed at distance of 10 cm from a convex mirror with radius of curvature 30 cm. Find the position, nature and the height of its image.


11. Explain the nature of light.

12. Explain : Reflection from plane mirror. OR Explain : Mirage with diagram.


13. Derive Lens formula.


TEST PAPER 15 : CHAPTER 1 : INTRODUCTION TO NANOTECHNOLOGY : 25 MARKSThere are 15 questions in all and time limit is 45 minutes.


1. 1 meter = ______ nm.

A. 109

B. 10(-9)

C. 1010

D. 10(-10)

2. The diameter of hydrogen atom is ______ nm.

A. 10

B. 1

C. 0.1

D. 0.01

3. ______ are the extensions of bucky balls.

A. Geodesic domes

B. Hexagons

C. Carbon nanotubes

D. AFM and STM

4. The size of a quantum dot is ______ m.

A. 5

B. 5 x 10(-9)

C. 5 x 10(-10)

D. 5 x 10(-11)


5. What is atomic engineering ?

6. What is the full form of MEMS ?

7. Who photographed nanotubes for the first time ?

8. What is the use of nanocrystals ?


9. What possibilities will nanotechnology offer ?

10. Why is carbon a fundamental element in nanotechnology ?

11. Explain the influence of nanotechnology on environment.

12. Explain : Nanotechnology plays by different rules.


13. Write a note on nanotechnology and health care.

14. Explain the concept of nanotubes with diagram.

15. Mention any six benefits of nanotechnology to mankind.


Wednesday, November 5, 2008

TEST PAPER 14 : ALL CHAPTERS : 100 MARKSThere are 54 questions in all and time limit is 3 hours.

SECTION - A : CHOOSE APPROPRIATE ALTERNATIVE : [1 markeach, Total marks 15]

1. The cut-off limit of human eye to see is ______.

A. 1 nm

B. 100 nm

C. 1000 nm

D. 10000 nm

2. Magnification for convex mirror is ______.

A. always positive

B. always negative

C. 0

D. 1

3. Who had patented more than 1000 inventions during his life time ?

A. Edison

B. Volta

C. Ampere

D. Faraday

4. ______ was the first person to notice the magnetic effect of electric current.

A. Faraday

B. Ampere

C. Oersted

D. Maxwell

5. Bombardment of neutron on 6Li3 gives ______.

A. 1H0

B. 1H1

C. 2H1

D. 3H1

6. The sun stays in one nakshatra for about ______.

A. 30 days

B. 13.5 days

C. 7 days

D. 1 day

7. Conversion of milk into curd is ______.

A. a physical change

B. a chemical change

C. not a chemical change

D. neither a physical nor a chemical change

8. Helmets are made from ______.

A. manganese steel

B. chrome steel

C. cobalt steel

D. silicon steel

9. An organic acid + an alcohol --> ______.

A. an aldehyde

B. a ketone

C. an ester

D. an amide

10. Which of the following is the monomer of natural rubber ?

A. Isoprene

B. Chloroprene

C. Neoprene

D. TEFLON

11. Liquefaction method is used for the purification of metals with ______.

A. high melting point

B. high boiling point

C. low melting point

D. low boiling point

12. Urine mainly consists of ______.

A. uranium

B. urea

C. CO2

D. sugar

13. Plant hormones are called ______.

A. hypohormones

B. metahormones

C. phytohormones

D. cytohormones

14. Mutation theory was given by ______.

A. Lamarck

B. Darwin

C. Hugo De Vries

D. Mendel

15. World Environment Day is celebrated every year on ______.

A. 5th March

B. 15th April

C. 15th May

D. 5th June

SECTION - B : ANSWER IN SHORT : [1 mark each, Totalmarks 15]

16. What is a simple microscope ?

17. Define : 1-ohm resistance.

18. What type of magnetic field arises when current passes through a linear wire ?

19. Where are hot water geysers found in Gujarat ?

20. What did Ptolemy believe about the Universe ?

21. Which is the gas mainly present in the atmosphere of Pluto ?

22. Define : pH.

23. Write the formula of acetone cyanohydrin.

24. What is the full form of PABA ?

25. Where does the biosynthetic phase of photosynthesis take place ?

26. Mention the types of nephridia in earth worm.

27. Define : Reproduction.

28. Where are genes located ?

29. What does environment mean ?

30. What is meant by biodegradable pollutants ?

SECTION - C : ANSWER IN BRIEF : [2 marks each, Totalmarks 24]

31. Write a brief note on bucky ball.

32. Distinguish between compound microscope and astronomical telescope[2 points]

33. A lamp of resistance 20Ω is joined to a battery of 12 V. Find the value of the resistance to be connected in series with the lamp in order to get current of 0.5 A. OR Explain the importance of earthing wire.

34. Explain : The energy obtained from nuclear fusion is better than that obtained from fission reactions.

35. Calculate the pH of 0.03 M aqueous solution of NaOH.(Take log10 3 = 0.4771). OR Mention the criteria of chemical equilibrium.

36. Write a note on saponification.

37. Mention four uses of hydrogen.

38. Describe exchange of gases in tissues.

39. Write four points about erythrocytes.

40. Explain the importance of ultrapure metals.

41. Mention the characteristics of hormones.

42. Explain : Homologous organs OR Draw a chart showing types of environment.

SECTION - D : ANSWER THE FOLLOWING : [3 marks each,Total marks 21]

43. Describe Ohm's experiment. OR Derive an expression for equivalent resistance(R) when three resistors of R1, R2 and R3 Ω are connected in parallel.

44. Explain : Solenoid.

45. Describe preparation of Plaster of Paris, write its two properties and two uses. OR Describe preparation of acetic acid by fermentation as well as by chemical method.

46. Describe refining of metals by electrochemical method.

47. Mention organs of human respiratory system and describe mechanism of breathing.

48. Draw a neat diagram of brain and write about hind brain.

49. Explain : Grafting with diagram.

SECTION - E : ANSWER IN DETAIL : [5 marks each, Totalmarks 25]

50. Explain : Total internal reflection and mirage with diagram.

51. Describe nuclear reactor with diagram. OR Write a note on construction and working of a space shuttle with simple diagram.

52. With the help of an experiment explain the concept of dynamic nature of chemical equilibrium.

53. Write a detailed note on ammonia, its manufacture and mention its properties and uses.

54. Describe the structure of chromosome with diagram. OR Describe Watson-Crick model for the structure of DNA.


Saturday, November 1, 2008



1. A bucky ball is a molecule consisting of ______ carbon atoms.

A. 50

B. 60

C. 70

D. 100

2. In the spectrum of white light obtained with prism, ______ colour is deviated maximum.

A. violet

B. red

C. green

D. orange

3. Which of the following is not correct ?

A. P = W/t

B. P = I2R

C. P = WI

D. P = VI

4. The insulation cover on the earth wire is ______ in colour.

A. red

B. black

C. green

D. white

5. 1 eV = ______ joule.

A. 1.6 x 10(-17)

B. 1.6 x 10(-18)

C. 1.6 x 10(-19)

D. 1.6 x 10(-20)

6. The stars appearing ______ have very high/highest temperature.

A. red

B. blue

C. white

D. yellow

7. The acid-base theory by Bronsted and Lowry...

A. is based on donation of electron.

B. does not give importance to the solvent.

C. gives importance to the solvent.

D. gives operational definition of acid and base.

8. The formula of soda ash is ______.

A. NaHCO3

B. Na2CO3

C. Na2CO3.10H2O

D. NaOH

9. What is the boiling point of acetic acid ?

A. 98 °C

B. 108 °C

C. 118 °C

D. 128 °C

10. ______ is the formula of cuprite.

A. Cu2O

B. Cu2S

C. CuCO3

D. CuCl2

11. ______ is a neutral oxide.

A. Na2O

B. CO2

C. CO

D. SO3

12. The lungs are covered by two membranes called ______.

A. glottis

B. epiglottis

C. pleura

D. sphincter

13. ______ pairs of spinal nerves arise from spinal cord.

A. 21

B. 31

C. 23

D. 46

14. The method by which the desired characters of two plants can be combined is...

A. cutting

B. layering

C. budding

D. grafting

15. The principle of inheritance of acquired characters was given by...

A. Lamarck

B. Weismann

C. Darwin

D. Hugo De Vries


16. Who photographed nanotubes for the first time ?

17. State Snell's law.

18. What is overloading ?

19. What is magma ?

20. Mention the calorific values of charcoal and wood ?

21. What is corona ?

22. State the pH of the solution whose pOH is 3.925.

23. Why is NaCl added to the Plaster of Paris ?

24. Write the chemical formulas of butanal and propanone.

25. What is gangue ?

26. Why is sulphuric acid known as the King of chemicals ?

27. What is the function of phloem ?

28. What is 'scion' ?

29. Mention the limitation of Darwinism.

30. What is conservation of environment ?


31. Explain primary and composite colours giving examples. OR Explain why defects of vision arise.

32. What is electrolysis ? Write Faraday's laws of electrolysis.

33. Mention two advantages of alternating current.

34. How are smokeless chulhas more efficient than traditional chulhas ? OR Mention names of terrestrial planets and their characteristics.

35. Write a note on safety glass.

36. What are condensation polymers ? Give examples.

37. Explain with example : Reaction of nonmetals with chlorine.

38. Describe biosynthetic phase of photosynthesis with diagram. OR Explain : Rhesus factor.

39. Describe endocrine glands in short.

40. What individual care should one take to prevent sexually transmitted diseases (STDs) ?

41. Explain : Variation.

42. Describe sewage treatment.


43. Describe tensile strength and thermal conductivity as properties of nanotubes.

44. Explain Cartesian sign convention for spherical mirrors with the help of a diagram.

45. Explain the re-use of byproducts obtained during Solvay's ammonia soda process. OR Describe three chemical properties of ethyl alcohol(ethanol).

46. Write a note on allotropes of sulphur.


48. Explain : Tropism OR Describe regeneration as a method of reproduction.

49. Mention harmful effects of water pollution.


50. Describe construction and working of a simple voltaic cell.

51. Explain Solar water heater with a neat diagram. OR Describe various orbits of artificial satellites giving appropriate details.

52. Derive the expression for the equilibrium constant for the reaction : A + B --> C + D .

53. Describe extraction of aluminium from bauxite using Bayer's process and Hall-Heroult process. OR Explain how metals react with oxygen, water and dilute acids giving proper examples.

54. Describe excretion in earthworm.


Tuesday, October 21, 2008



1. The diameter of a bucky ball is about ______.

A. 1 A°

B. 10 A°

C. 100 A°

D. 1000 A°

2. Absolute refractive index of any medium is always ______.

A. 1

B. greater than 1

C. smaller than 1

D. 0

3. The unit of electric current is ______.

A. coulomb-second

B. coulomb/second

C. volt/second

D. coulomb/volt

4. The direction of magnetic field lines is taken ______.

A. N to S

B. S to N

C. entering both poles

D. leaving both poles

5. ______ is the superior quality of coal.

A. Peat

B. Lignite

C. Bituminous

D. Anthracite

6. How many satellites does mercury have ?

A. 30

B. 21

C. 8

D. 0

7. The concentration of H+ ions in neutral water is ______.

A. 1 x 10-7 mol/lit

B. -7.0 mol/lit

C. 7.0 mol/lit

D. (1/7) mol/lit

8. Brine is ______.

A. Na2CO3

B. NaHCO3

C. NaCl

D. Na2SiO3

9. The enzyme that converts milk to curd is ______.

A. lactase

B. invertase

C. zymase

D. cellulase

10. Brass is an alloy of ______.

A. copper and nickel

B. copper and zinc

C. copper and tin

D. copper and iron

11. The atomic number of sulphur is ______.

A. 15

B. 16

C. 17

D. 18

12. ______ shows phagocytosis.

A. Amoeba

B. Locust

C. Earthworm

D. Cockroach

13. Which multicellular organism lacks the nervous system ?

A. Hydra

B. Locust

C. Sponge

D. Cockroach

14. Disease caused by Treponema Palidium is _______.

A. AIDS

B. Syphilis

C. Gonorrhoea

D. Typhoid

15. Minamata disease is caused by the pollution of

A. Mercury

B. Lead

C. Arsenic

D. Cadmium


16. What are complimentary colours ?

17. How many electrons should flow in one second to contribute electric current of 1 ampere ?

18. What type of magnetic field arises when current passes through a linear wire ?

19. Define : Solar constant.

20. Why does the candle get extinguished when air is blown ?

21. How many meters make 1 light year ?

22. What is 1 molar(1 M) solution ?

23. Write the chemical name of plaster of Paris.

24. What is the monomer of natural rubber ?

25. What is e.m.f. series (of metals) ?

26. Give two examples of neutral oxides.

27. What is the life span of human erythrocytes ?

28. What is reflex arc ?

29. What are homologous chromosomes ?

30. What is Greenhouse effect ?


31. Mention the use of nanotechnology for resources like energy and water.

32. Explain why dispersion of light occurs.

33. Three resistors of 5 Ω, 10 Ω and 15 Ω are connected in parallel.If the voltage is 3 V, find the overall current flowing through the circuit. OR Explain the right hand thumb rule for straight conductor.

34. Write a note on Jupiter.

35. Describe Arrhenius' concept of acid and base.

36. Write addition reactions(one each) of formaldehyde and propanone. OR Write a brief note on soap.

37. Explain calcination giving examples of two reactions.

38. Explain : Exchange of gases in leaves. OR Describe excretion and osmoregulation in amoeba.

39. Mention characteristics of hormones.

40. Write a note on puberty.

41. Explain homologous organs with example.

42. Describe Oxidation pond method.


43. Describe chemical effect of electric current giving example. OR Derive the expression for equivalent resistance(R) of three resistors connected in series.

44. Explain : Solenoid.

45. Describe the manufacture of bleaching powder. Write its reaction with dilute sulphuric acid and mention two uses.

46. Describe froth floatation process with diagram. OR Describe Bayer's process for the concentration of bauxite ore.

47. Describe light phase of photosynthesis. OR Describe digestive system of grasshopper with diagram.

48. Describe the role of sex hormones in humans.

49. Describe Mendel's concept of heredity.


50. Derive lens formula.

51. Describe fractional distillation of petroleum with neat diagram and mention the products obtained. OR Describe construction and working of a space shuttle(diagram not necessary).

52. Explain physical equilibrium with example.

53. Describe laboratory preparation of hydrogen with diagram.

54. Describe transportation of mineral elements in plants with diagram. OR Draw a neat diagram of heart and explain its working.


Saturday, October 11, 2008

TEST PAPER 11 - UNITS 6,7,8 - 50 MARKSThere are 26 questions in all and time limit is 90 minutes.


1. In insects the air enters the tracheal system through ______.

A. spiracles

B. nostrils

C. lungs

D. bronchi

2. The function of incisors is ______.

A. cutting

B. tearing

C. grinding

D. chewing

3. There are ______ types of antigens on erythrocytes.

A. five

B. four

C. three

D. two

4. A sunflower plant bends towards the sun; it is ______ response.

A. thigmonastic

B. seismonastic

C. thermonastic

D. photonastic

5. ______ is useful where seeds have long dormancy period and poor germination capacity.

A. Cutting

B. Layering

C. Grafting

D. Regeneration

6. ______ is an example of retrovirus.

A. Virus causing AIDS

B. TMV

C. Bacteriophage

D. RIV

7. Eutrophication increases due to increase in ______.

A. BOD

B. industrialisation

C. DOB

D. soil erosion


8. Through what does a frog respire ?

9. What is lymph ?

10. Which plant hormones retard growth ?

11. What is menopause ?

12. What is the difference between prokaryotic and eukaryotic chromosomes ?

13. What is meant by organic evolution ?

14. What is the full form of NEERI ?


15. Describe the effect of water and carbon dioxide on the process of photosynthesis.

16. Write a note on blood platelets.

17. Explain : Photoperiodism OR Mention the names of four endocrine glands in humans.

18. Distinguish between asexual and sexual reproduction(two points).

19. Explain : Variation.

20. Mention two effects of land pollution. OR Draw a chart showing types of environment.


21. Describe exchange of gases in roots and stems with diagram. OR Describe digestive system of grass-hopper with diagram.

22. Write a note on tropism.

23. Mention any six laws for environmental protection in India.


24. Describe excretion in eatrhworm. OR Describe the structure of nephron with diagram.

25. Describe sexual cycle in human female.

26. Write a note on types of chromosomes with diagram.


TEST PAPER 10 - UNITS 4,5 - 50 MARKSThere are 26 questions in all and time limit is 90 minutes.


1. In pH scale, the base of the logarithm of molar concentration of H3O+ ion is ______.

A. 10

B. 20

C. 50

D. 100

2. What is used as an antacid ?

A. Na2CO3

B. NaHCO3

C. NaCl

D. NaOH

3. ______ is an ore of calcium.

A. Magnetite

B. Siderite

C. Malachite

D. Gypsum

4. ______ is a poor conducting metal for heat.

A. Copper

B. Silver

C. Aluminium

D. Lead

5. There are ______ nonmetallic elements.

A. 20

B. 22

C. 24

D. 25

6. ______ have fruity smell.

A. Alcohols

B. Organic acids

C. Esters

D. Ketones

7. Which of the following is artificial rubber ?

A. Isoprene

B. Chloroprene

C. Neoprene

D. TEFLON


8. What is used as catalyst in the preparation of vegetable ghee ?

9. Give two examples of irreversible reaction.

10. What is the full form of RCC ?

11. Write the chemical equation for the preparation of quick lime.

12. Why are metals like sodium, pottasium and aluminium not available in free state in nature ?

13. Why is ammonia not collected by downward displacement of water ?

14. Write the chemical equation for the combustion of ethanol.


15. Mention the criteria for chemical equilibrium.

16. Describe the preparation of bleaching powder giving chemical reaction. OR Mention four uses of washing soda.

17. Give chemical equations : (i) when iron reacts with steam (ii) when magnesium reacts with hot boiling water. OR Write the chemical equations involved in Bayer's process.

18. Describe Frasch process to obtain sulphur(no diagram).

19. Describe : Vulcanisation of rubber.

20. Describe harmful effects of ethanol.


21. Write the chemical formula of ordinary glass and describe its manufacture.

22. Write three chemical properties of sulphur dioxide.

23. Describe preparation of methanal from methanol, mention two properties and two uses of methanal. OR Write an introductory note on carbonyl compounds.


24. Explain the concept of dynamic nature of chemical equilibrium giving example.

25. What is concentration of ore ? Describe the process used to concentrate a sulphide ore. OR Describe refining of metals by elecrolysis giving example.

26. Describe preparation of hydrogen in laboratory with neat diagram.


Friday, October 10, 2008

TEST PAPER 9 - UNITS 1,2,3 - 50 MARKSThere are 27 questions in all and time limit is 90 minutes.


1. "There is plenty of room at the bottom." This was stated by...

A. Issac Newton

B. Albert Einstein

C. Richard Feynman

D. Eric Drexler

2. The mirror formula is ______.

A. (1/u)-(1/v) = (1/f)

B. (1/f)+(1/u) = (1/v)

C. f = uv/(u+v)

D. f = (u+v)/uv

3. In a transparent medium, the velocity of ______ light is the least.

A. red

B. green

C. yellow

D. violet

4. 1 unit of domestic electric energy is equal to...

A. 1 joule

B. 1 watt-second

C. 3.6 x 106 j

D. 3.6 x 106 kwh

5. The current passing through two separate lines(circuits) of our houses is ______ A and ______ A.

A. 5,10

B. 5,15

C. 10,15

D. 2,5

6. During the refining of petroleum, the fraction having highest boiling temperature...

A. condenses first

B. condenses last

C. does not condense

D. remains in gaseous form

7. ______ is the largest planet of our solar system.

A. Earth

B. Jupiter

C. Saturn

D. Neptune


8. What is a bucky tube ?

9. What is an image ?

10. Current flows in a wire. Can we call the wire charged ? Why ?

11. Define : Induced electric current.

12. Define : Solar constant.

13. What is the full form of KVIC ?

14. What are meteors ?

15. What is the basic concept(belief) of Steady-state theory ?


16. Mention applications of bucky ball and carbon nanotubes.

17. An object is placed at 30 cm in front of a convex lens of focal length 20 cm. Find the position of its image. OR Draw the ray diagram to show working of a compound microscope.

18. What is electrolysis ? Write Faraday's laws of electrolysis. OR Mention disadvantages of using direct current(DC).

19. Mention two categories of solar appliances with examples.

20. Mention the names and the characteristics of terrestrial planets.


21. Mention the role of nanotechnology in security.

22. Describe with the help of a diagram how the seven colours of light can be combined to get white light.

23. Explain : Electric potential and electric potential difference.

24. Explain : Solar water heater with diagram. OR Describe construction and working of a biogas plant(no diagram).

25. Write a note on Nakshatras. OR Mention six uses of artificial satellites.


26. Derive the generalised form of Snell's law.

27. Derive the expression for equivalent resistance(R) when three resistors R1,R2 and R3 are connected in parallel and find the current flowing through a circuit containing three resistors of 10 Ω, 5 Ω, and 5 Ω connected in parallel with potential difference 4 V. OR Describe the principle and working of an electric generator with diagram.


Wednesday, October 1, 2008

TEST PAPER 8 - UNIT 8 - 25 MARKSThere are 14 questions in all and time limit is 45 minutes.


1. The number of genes in human being is about...

A. 23

B. 46

C. 1,000 to 2,000

D. 30,000 to 40,000

2. ______ gave Germplasm theory.

A. Lamarck

B. Weismann

C. Darwin

D. Hugo De Vries

3. Biological oxygen demand of ______ is the least.

A. sewage

B. sea water

C. pure water

D. polluted water

4. ______ is the first step of sewage treatment.

A. Precipitation

B. Chlorination

C. Sedimentation

D. Aeration


5. Define : Heredity.

6. Mutation is one of the reasons of variation. True or false ?

7. Mention the major reason for environmental problems.

8. What is biomagnification ?


9. Explain : Analogous organs giving example. OR Mention components of nucleotides.

10. Explain : Acid rain.

11. Describe oxidation pond method.


12. Explain Mendel's concept of heredity.

13. Describe harmful effects of water pollution. OR Describe the interrelationship among population, environment and development.


14. Describe Watson-Crick model for the structure of DNA with diagram.




1. ______ is the complimentary system of nervous system.

A. Circulatory system

B. Endocrine system

C. Lymphatic system

D. Skeletal system

2. ______ hormone regulates ionic balance.

A. Vasopressin

B. Thyroxin

C. Glucagon

D. Testosteron

3. ______ is a very useful method for developing garden.

A. Cutting

B. Layering

C. Grafting

D. Budding

4. The normal weight of human child at the time of birth should be ______.

A. 1.5 kg

B. 1.5 to 2.5 kg

C. 3.0 to 3.5 kg

D. 5.0 to 6.5 kg


5. What is photoperiodism ?

6. What is meant by autonomous nervous system ?

7. Give two examples of organisms reproducing by spore formation.

8. What is vasectomy ?


9. Mention two characteristics of hormones.

10. Give two examples of nastic movement.

11. Mention accessory reproductive glands and their function in human male. OR Mention symptoms of sexually transmitted diseases.


12. Write in brief about spinal cord.

13. Describe budding as a method of reproduction.


14. Describe female reproductive system in humans with diagram.




1. The energy released during cellular respiration is stored in ______.

A. ATP

B. glucose

C. NADPH2

D. lungs

2. Cockroach shows ______ mode of nutrition.

A. herbivorous

B. carnivorous

C. omnivorous

D. grazing

3. ______ is a necessary mineral for clotting of blood.

A. Calcium

B. Potassium

C. Iron

D. Zinc

4. Birds excrete wastes in the form of ______.

A. urea

B. proteins

C. uric acid

D. water


5. What is the aim of nutrition ?

6. Write the chemical equation for aerobic respiration.

7. Define : Translocation.

8. Where are blood antigens located ?


9. Describe parasitic nutrition.

10. Describe mechanism of breathing.

11. Write a note on leucocytes.



13. Describe human excretory system with diagram.


14. Describe human respiratory system(diagram not needed). OR Describe : Phloem with diagram.




1. During electrolytic reduction, ______ acts as reducing agent.

A. anode

B. cathode

C. electrolyte

D. metal

2. ______ is used for manufacturing scientific balance.

A. Steel

B. Brass

C. Stainless steel

D. Magnalium

3. There are ______ nonmetals in solid state.

A. 11

B. 12

C. 13

D. 14

4. Sulphur belongs to ______ group in periodic table.

A. Boron

B. Carbon

C. Oxygen

D. Halogen


5. Define : Metallurgy.

6. What is the use of Van Arkel's method ?

7. Why do nonmetals not react with dilute acids ?

8. Which crystalline form of sulphur is most stable ?


9. Describe roasting with two examples.

10. Mention four uses of hydrogen.

11. Describe preparation of sulphur from natural gas.


12. Describe extraction of aluminium by Hall-Heroult method with diagram.

13. Describe manufacture of ammonia and mention its three uses.


14. Write a note on chemical reduction method. ORDescribe manufacture of iron using blast furnace.


Tuesday, September 30, 2008



1. Formation of petroleum in earth's crust is a ______ reaction.

A. geochemical

B. biochemical

C. physiochemical

D. physical

2. Pyrex glass is ______.

A. plasticized glass

B. polymeric glass

C. heat-resistant glass

D. opaque glass

3. Ethylethanoate is ______.

A. an alcohol

B. an acid

C. an ester

D. a ketone

4. Which of the following is not an oxidising agent ?

A. NaBH4

B. KMnO4

C. Cr2O3

D. Fehling's solution


5. Define : Rate of reaction.

6. State the Law of Mass-Action.

7. Who prepared Portland cement for the first time ? When ?

8. What is formalin ?


9. Explain : Molarity.

10. Describe manufacture of lime.

11. Show that the H atom in the -COOH group has acidic nature.


12. Describe Ammonia-Soda process to obtain washing soda.

13. Write chemical properties of formaldehyde giving chemical equations. OR Describe preparation of polyamides(nylon) and give its two uses.


14. Write a detailed note on pH.




1. What is used generally as a connecting material in solar panels ?

A. Silicon

B. Silver

C. Selenium

D. Germanium

2. ______ invented artificial radioactivity.

A. Marie Curie

B. Berkley

C. Lord Rudherford

D. Maxwell

3. The mass of earth is ______ times the mass of mercury.

A. 10

B. 14

C. 18

D. 22

4. Each nakshatra is an angular region of about ______.

A. 15° 30'

B. 14° 40'

C. 13° 20'

D. 12° 30'


5. What is the wavelength of visible light in meter ?

6. How is charcoal obtained from wood ?

7. What is corona ?

8. What is celestial sphere ?


9. Mention two advantages and two limitations of solar cooker.

10. Explain the theory of formation of our solar system.

11. Explain the installation of artificial satellite by space shuttle.


12. Mention six characteristics of ideal fuel.

13. Write a note on asteroids(six points).


14. Write a note on Nuclear reactor with a neat diagram. OR Write a note on galaxy.




1. The equivalent resistance of three resistors, each of 6 Ω, connected in parallel is ______.

A. 6 Ω

B. 18 Ω

C. 2 Ω

D. 0.5 Ω

2. Which of the following is not correct for the electrical work ?

A. W = VQ

B. W = VIt

C. W = I2Rt

D. W = I2RQ

3. What is the frequency of current used domestically in India ?

A. 50 Hz

B. 60 Hz

C. 110 Hz

D. 220 Hz

4. The principle of magnetic induction was given by ______.

A. Faraday

B. Galileo

C. Oersted

D. Ampere


5. Define : Electrical potential.

6. What causes resistance in a conductor ?

7. What is over-loading ?

8. What is alternating current(AC) ?


9. State two disadvantages of series connection.

10. If 300 mA current passes through a lamp, how many electrons will pass through it in 1 minute ?

11. Explain the work(importance) of a fuse.


12. Explain the construction and working of a simple Voltaic cell.

13. Explain the experiment to show the presence of magnetic field due to electric current.


14. Describe Ohm's experiment OR Describe electric motor with neat diagram.


Monday, September 29, 2008



1. 1 nanometer = ______ cm.

A. 10-9

B. 10-8

C. 10-7

D. 10-6

2. The most important property of nanomaterials is ______.

A. force

B. friction

C. pressure

D. ductility

3. For a plane mirror, magnification (m) = ______.

A. 0

B. 1

C. +1 or -1

D. < 1

4. Blue + Green (light) = ______.

A. Magenta

B. Cyan

C. Yellow

D. Violet


5. Define : Nanotechnology.

6. Define : Principal focus of convex lens.

7. Why does a green leaf appear green ?

8. Mention the principle of simple microscope.


9. Explain the use of nanotechnology in diagnostics.

10. Explain : Regular reflection.

11. Explain : Near-sightedness(no diagram).


12. Describe the concept of nanotubes.

13. Describe subtractive method of mixing of pigments.


14. Derive mirror formula.


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Subscribe to: Posts (Atom)A FEW WORDS TO START WITH...In addition to myscience blog where I have posted study material in the form of questions and answers, I have created this blog to post test papers of science in varying marks/time format in different combinations of chapters so that students/parents/teachers can start using them right from the beginning of the academic year and can master the subject completely by the time they enter the BOARD EXAM ROOM. I will keep on adding new test papers as and when time permits. WISH GOOD LUCK TO MY STUDENTS...

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