NEW ERA PUBLIC SCHOOL Assignments for Summer Vacation (2021-2022) Class: XII Subject: English General Instructions: A. Attempt I in your English register. B. Attempt II and III on A4 sized sheets. C. III has to be filed and submitted in a folder. D. All answers must be handwritten. E. GS Project must be completed in minimum 12 pages. F. Illustrations and pictures can be used to accentuate your GS Project. I. Attempt all questions. Q1. Your school, Modern Public School, is enacting the play “A Christmas Carol’ to raise funds for the PM Cares Fund to aid the fight against COVID19. Prepare a poster giving the necessary details. Word Limit: 50 words. Q2. You are Sapna Singh/Sanjay Singh, the Secretary of Cultural Committee of your school. Write a notice in about 50 words inviting students to participate in the Annual Day of the school to be organised next month. Q3. You are extremely disturbed by the plight of the daily wage labourers, who are forced to leave the city because of the pandemic. Write an article highlighting their condition and express your concern. Sign yourself as Khoshali Bhardwaj/ Kaushal Bharadwaj. Word limit: 150-200 words. Q4. . You are Kamala/Kamal of 10 Civil Lines Extension, Chanakyapuri, New Delhi. You are happy with the government’s decision to help the world, especially the poor countries, by sharing its resources during this crisis. While this has earned India a lot of goodwill, it has also created a temporary scarcity of resources in the country itself. Write a balanced letter to the Editor, The Times of India expressing your opinion. Word Limit-120 words. Q5. A debate competition on “It is important to guard Indian culture in the mess of global cultures today” has been hosted by your school. You are Anil/Anita, participating. Write a debate in favour or against this topic so that your manoeuvre is well tested and acclaimed by the audience. Word limit: 150-200 words. II. Art Integration Activity Imagine yourself to be Franz from the story The Last Lesson. Your teacher, M Hamel has tasked you with the responsibility of bringing out the last edition of the school magazine, named Vive La France before the Prussians take over. Use your imagination and creativity and create the magazine (minimum 4 pages).
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NEW ERA PUBLIC SCHOOL Assignments for Summer Vacation (2021-2022)
Class: XII
Subject: English
General Instructions:
A. Attempt I in your English register.
B. Attempt II and III on A4 sized sheets.
C. III has to be filed and submitted in a folder.
D. All answers must be handwritten.
E. GS Project must be completed in minimum 12 pages.
F. Illustrations and pictures can be used to accentuate your GS Project.
I. Attempt all questions.
Q1. Your school, Modern Public School, is enacting the play “A Christmas Carol’ to raise funds
for the PM Cares Fund to aid the fight against COVID19. Prepare a poster giving the necessary
details. Word Limit: 50 words.
Q2. You are Sapna Singh/Sanjay Singh, the Secretary of Cultural Committee of your school.
Write a notice in about 50 words inviting students to participate in the Annual Day of the school
to be organised next month.
Q3. You are extremely disturbed by the plight of the daily wage labourers, who are forced to
leave the city because of the pandemic. Write an article highlighting their condition and express
your concern. Sign yourself as Khoshali Bhardwaj/ Kaushal Bharadwaj. Word limit: 150-200
words.
Q4. . You are Kamala/Kamal of 10 Civil Lines Extension, Chanakyapuri, New Delhi. You are
happy with the government’s decision to help the world, especially the poor countries, by sharing
its resources during this crisis. While this has earned India a lot of goodwill, it has also created a
temporary scarcity of resources in the country itself. Write a balanced letter to the Editor, The
Times of India expressing your opinion. Word Limit-120 words.
Q5. A debate competition on “It is important to guard Indian culture in the mess of global
cultures today” has been hosted by your school. You are Anil/Anita, participating. Write a debate
in favour or against this topic so that your manoeuvre is well tested and acclaimed by the
audience. Word limit: 150-200 words.
II. Art Integration Activity
Imagine yourself to be Franz from the story The Last Lesson. Your teacher, M Hamel has
tasked you with the responsibility of bringing out the last edition of the school magazine, named
Vive La France before the Prussians take over. Use your imagination and creativity and create
the magazine (minimum 4 pages).
III. GS Project
1. 12 A - Social Media: Impact on Human Behavior and Society
2. 12 B - Gender Stereotyping in Commercial Advertisements
3. 12 C – Nationalism Vs Globalization
4. 12 D – Forced Migration-An International Crisis
5. 12 E – Mental Health- A Taboo Subject in India?
6. 12 F – Artificial Intelligence- The Future or the End of the Human Race?
SUBJECT: MATHEMATICS
(A) Assignment (To be done in Mathematics Register)
Q1. Set A has 3 elements and set B has 4 elements. Find the number of injective mappings
that can be defined from A to B.
Q2. Check whether a relation R = {(a, b): a< b3, a, b Є N} is transitive or not. Justify.
Q3. Is the function f: N→ 𝑁 given by f(1) = f(2) =1and f(x) = x -1, for every x > 2
one one ? Justify.
Q4. If f(x) = |x| and g(x) = [x-1] where [ ] denotes greatest integer function, find fog (-2.5)
Q5. R = {(a, b) : a + b = 6, a, b Є {1, 2, 3, 4}}. Write range of R.
Q6. Write the domain of f(x) = 1
𝑥2− 4
Q7. Write the range of f(x) = 𝑥−1
| 𝑥−1| .
Q8. Let R be relation defined on R as R = {(a, b): |a-b| is divisible by 5}. Show that R is an
equivalence relation.
Q9. Let A = R – {3} and B = R – {1}. Let f: A → B be defined as f(x) = 𝑥−2
𝑥−3
Find g: B → A such that fog = gof = I
Q10. Let R be relation defined on AXA, where A= {1, 2, 3-----,9} as R = {(a, b)R(c, d)
iff ad(b + c)= bc (a + d}. Show that R is an equivalence relation.
Q11. Find the number of all the possible one-one functions from set A = {3, 5, 7} to itself.
Q12. Let f be the greatest integer function and g be the absolute value function, find the value of
(gof) 5 5
( )3 3
fog
.
Q13. If f(x) = 2x-3, write f-1(3)
Q14. Consider f : R+ (9, ) given by f(x) = 5x2 + 6x 9. Prove that f is invertible with
f1(y) = 5
3554 y.
Q15. Show that the function f : R → R defined by 2
( ) , ,1
xf x x R
x
is neither one-one nor
onto.
Q16. If A = [ -1 2 -5] and BT = [ 2 -1 7], find AB.
Q17. If A = 1 1
2 1
, B =
1
1
a
b
and (A + B)2 = A2 + B2 then find the values of a and b.
Q18. If A = [1 2 32 3 1
] , 2A −B = [−1 5 35 6 0
] , find B.
Q19. If [2x 3 ] [1 2
−3 0] [
𝑥3
] = 0, find x.
Q20. If A = [ 4 2−1 1
], prove that (A – 2I) (A – 3 I) = 0
Q21. If [0 −5 𝑎𝑏 𝑐 32 𝑑 0
] is skew symmetric, find a, b, c and d.
Q22. If [0 2𝑏 −23 1 3
3𝑎 3 −1] is symmetric, find the value of 9a2 – 4b2
Q23. If A = [ 2 3−1 2
] and f(x) = x2 – 4x + 7, show that f(A) = 0 and use it to find A3.
Q24. Solve for x and y where [ 𝑥 𝑦3𝑦 𝑥] [
12
] = [35
]
Q25. Express the following matrices as sum of symmetric and skew symmetric matrices.
i) [3 −41 −1
] ii) [3 2 54 1 30 6 7
]
Q26. If A = [1 2 33 −2 14 2 1
] then show that A3 – 23A – 40I = 0
Q27. If A = ,a b
c d
find determinant (A. (adj. A)).
Q28. If A =
1
2
3
, B = [–2 –1 –4], verify that (AB)´ = B´A´.
Q29. Using elementary row transformations, find the inverse of the following matrix:
2 1 4
4 0 2
3 2 7
Q30. If points (2, 0), (0, 5) and (x, y) are collinear, using determinants, show that 12 5
x y .
Q31. If for matrix A, |A| = 2, find |5A|, where matrix A is of order 2 × 2.
Q32. If =
1 2 3
2 0 1
5 3 8
then write the minor of element a22, a12 and a23
Q33. Find the matrix A, such that 2 1 3 2 1 0
.3 2 5 3 0 1
A
Q34. If A =
1 1 1
2 1 3 ,
1 1 1
find A–1 and use it to solve the following system of equations:
x + 2y + z = 4, –x + y + z = 0, x – 3y + z = 2
Q35. Given two matrices A =
1 1 0
2 3 4
0 1 2
and B =
2 2 4
4 2 4
2 1 5
verify that BA = 6I.
Use the above result to solve the following system of equations:
x – y = 3; 2x + 3y + 4z = 17; y + 2z = 7.
(B) Practical Activities (To be done in Mathematics Practical file).
(i) Relation is symmetric but neither reflexive nor transitive.
(ii) Relation is an equivalence relation.
(iii) Function which is not one-one but onto.
(iv) Function which is one-one but not onto.
SUBJECT: BIOLOGY
General Instructions
1. All questions are compulsory.
2. Students are required to do this assignment in the class work notebook.
3. All students will complete their Biology practical file work as per the
instructions given and data shared.
4. The Biology project report is to be completed and soft copy to be mailed as
per discussion .
5. Art integration project:
Students are required to draw the following diagrams from NCERT Biology
textbook on A4 size drawing sheets:
(a) A typical anatropous ovule
(b) A mature embryo sac
(c ) L.S of pistil
(d) Stages of embryo development in a dicot plant
Assignment
CH 1: REPRODUCTION IN ORGANISMS
Q1.How do the following organisms reproduce?
a) Paramecium b) Penicillium
Q2. Which part of banana and ginger plants are used for vegetative propagation?
Q3.In Bryophyllum, leaf margins show green structures. What are these? Name another plant
having such structure.
Q4. Give term for the condition in which a single organism possesses both sex organs.
Q5.Why does hilly areas of Kerala, Karnataka and Tamil Nadu transform into blue Stretches that
attracts many tourists?
Q6. Differentiate between homogametes and heterogametes.
Q7. What regulates the reproduction processes and the associated behavioral expressions in
organisms?
Q8. Why a moss plant produces a large number of antherozoids but relatively only a few egg
cells?
Q9. (a) State the difference between meiocyte and gamete with respect to chromosome number.
(b) Why is a whiptail lizard referred to as parthenogenetic?
CH 2: SEXUAL REPRODUCTION IN FLOWERING PLANTS
Q10.What is agamospermy?
Q11.Can snails pollinate the flowers? What do you call such a pollination?
Q12. In some species of Asteraceae and grasses, seeds are formed without fusion of gametes.
Give the scientific term for such type of reproduction.
Q13. How are pollen stored in a pollen bank?
Q14. In the embryos of a typical dicot and grass, which are the true homologous structures?
Q15. State two differences between Perisperm and Pericarp.
Q16.Draw L.S of anatropous ovule of an angiosperm and label a) Nucellus b) Secondary
nucleus.
Q17. (a) Name the organic material exine of the pollen grain is made up of. How is this
material advantageous to pollen grain?
(b) It is observed that it does not form a continuous layer around the pollen grain. Give
reason.
(c) How are pollen banks' useful?
Q18. (a) Can a plant flowering in Mumbai be pollinated by pollen grains of the same
species growing in New Delhi? Provide explanations to your answer.
(b) Draw the diagram of a pistil where pollination has successfully occurred.
Label the parts involved in reaching the male gametes to its desired destination.
Q19. Explain any three advantages the seeds offer to angiosperms.
Q20. An angiospermic plant, before formation of microspore sporogenous tissue undergoes cell
division
(a) Name the type of cell division.
(b) What would be the ploidy of the cells of tetrad.
Q21. How does the floral pattern on Mediterranean orchid Ophrus guarantee cross pollination?
Q22. What relationship exists between a species of moth and Yucca plant?
Q23. (i) Write the characteristics features of anther, pollen and stigma of wind pollinated
flowers.
(ii) How do flowers reward their insect pollinators? Explain.
SUBJECT: PHYSICS
General Instructions:
1. All questions are compulsory.
2. Students are required to do this assignment in the class work notebook.
3. All students will complete their Physics practical file work as per the
instructions given and data shared.
4. Art Integration activity- Students are required to draw the circuit diagram of Ohm’s
law and explain its working through PPT.
Very short questions-(1 mark)
1. Ordinary rubber is an insulator. But the special rubber tyres of aircrafts are made slightly
conducting. Why is this necessary?
2. An inflated balloon is charged by rubbing with fur. Will it stick readily to a conducting
wall or to an insulating wall? Give reason.
3. Why is electric field zero inside a charged conductor?
4. A spherical balloon carries a charge that is uniformly distributed over its surface. As the
balloon is blown up and increases in size, how does the total electric flux coming out of the
surface change? Give reason.
5. What happens if the plates of a charged capacitor are suddenly connected by a conducting
wire?
6. Why is it that a man sitting in an insulated metal cage does not receive any shock when it
is connected to a high voltage supply?
7. A force F is acting between two charges placed some distance apart in vacuum. If a brass
rod is placed between these two charges, how does the force change?
Short questions- (3marks)
8. An electric dipole free to move is placed in a uniform electric field. Explain along with
diagram its motion when it is placed (a) parallel to the field (b) perpendicular to the field.
9. Two point charges having equal charges separated by 1 metre distance experience a force of 8
N.
What will be the force experienced by them, if they are held in water at the same distance?
(Given, Kwater= 80 ).
10.
The flux of the electrostatic field, through the closed spherical surface S', is found to be four
times
that through the closed spherical surface S. Find the magnitude of the charge Q
11. If the total charge enclosed by a surface is zero, does it imply that the electric field
everywhere on the surface is zero? Conversely, if the electric field everywhere on the
surface is zero, does it imply that the charge inside is zero?
Long answers-(5 marks)
12. Define the terms (i) absolute permittivity of free space (ii) dielectric strength of a
dielectric.
Derive an expression for the electric field due to an infinetly plane sheet of charge.
13. Define electric flux and write its S.I. unit.
“Gauss’s law in electrostatics is true for any closed surface, no matter what its shape or
size is.” Justify this statement with the help of a suitable example,
14. A dipole is made up of two charges +q and –q separated by a distance 2a. Derive an
expression for the electric field E due to this dipole at a distance r from the centre of the
dipole on the equatorial plane. Draw the shape of the graph between E and r when r>> a.
15. Eight identical point charges of q coulomb each are placed at the corners of a cube of
each side 0.1m. Calculate the electric field at the centre G of the cube . Calculate the field
at the centre when one of the corner charges is removed.
SUBJECT: CHEMISTRY
General Instructions:-
1. Art Activity: Make the project on the given topic without filling in the observation table in the
form of a power point presentation.
2. Learn the scheme for inorganic salt analysis.
3. Write the following practicals in your practical file:
- Scheme for salt analysis.
- Titration I & II
4. Write the answers for the following questions asked in chemistry viva (to be done in the class
notebook)
- Titration:
1. Define:
(a) end point. (b) titrand (c) titrant
(d) standard solution (e) indicator (f) volumetric analysis
2. Differentiate, with examples, between primary and secondary solutions.
3. Give reasons:
(a) The burette and pipette must be rinsed with the solution they are filled.
(b) The last drop of the solution must not be blown out of pipette.
(c) We do not rinse the titration flask with the respective solution.
(d) We make sure that there are no air bubbles in the burette before carrying out titration.
(e) Titration is always repeated thrice.
4. What is the least count and maximum reading of the burette?
5. Which meniscus is read in coloured and colourless solutions? Give reason.
6. Write the formula to calculate the strength, with unit, of the solution.
7. Suggest some sources of error in titration.
Salt Analysis:
1. Define:
(a) solubility product (b) common ion effect (c) salt hydrolysis
2. What is the role of common ion effect and solubility product in group II, IV and V analysis?
3. What is the difference between solubility product and ionic product?
4. Write the formula for the following complexes:
(a) Nesseler’s reagent (b) Chromyl chloride
(c) Brown ring in NO3- test (d) Yellow precipitate in PO4
3- test
(e) Purple colouration in S2- test (f) Blue colour in NO2- test
(g) White precipitate in PO43- test (h) Ammonium molybdate
(i) Brown precipitate in Cu2+ test (j) Prussian blue colouration in Fe3+ test
(k) Blood red colouration in Fe3+ test (l) Red precipitate in Ni2+ test
SUBJECT-ECONOMICS
PART A
Complete the text questions of the Chapters covered in Class in your notebook and revise for the
forthcoming Unit tests.
PART B
ART INTEGRATION ACTIVITY
The students may choose any one of the following options:
a. Make a newsletter which includes all the types of news that you read in a daily
newspaper taking care to avoid negative news and focussing more on articles with an
economic implication.
b. Draw a poster depicting the Indian economy on the eve of independence.
c. Write a poem/rap on the current problems facing the Indian economy.
d. Prepare a Kahoot quiz on the concepts covered so far in class.
e. Choose any two famous Indian economists and present their contributions through
pictures and text on A4 sheets.
PART C
Project presentation-Prepare a project according to the guidelines mentioned below.
PROJECT GUIDELINES
Format for presentation of the Project
a. External cover page
b. Acknowledgement
c. Preface
d. Index (with page numbers)
e. Introduction to the topic
f. Historical Perspective
g. Details of the topic (causes, consequences/remedies)
h. Diagrammatic explanation (if any)
i. Numerical explanation (if any)
j. Pros and Cons of the economic event/happening (if any)
k. Application of the concept
l. Impact on Indian Economy
m. Impact in Corona Pandemic (if any)
n. Newspaper articles
o. Students’ own views/perception/opinion and learning from the topic
p. Feedback Sheet
q. Bibliography
Mode of presentation of the Project
a. Students must strive to present the ideas in an innovative manner. The content should be
well-explained by integrating art and technology.
b. The project must be neat and well-presented and must be completely handwritten. No
whiteners to be used or written matter to be crossed out. In case of any mistakes, redo the
sheet.
c. Project should be of 3,500-4,000 words ie about 30-35 pages. (excluding diagrams and
graphs).
d. The cover page, certificate of authenticity and feedback sheet shall be mailed to you and
their printouts will be used.
e. The project concepts need to be supplemented by newspaper articles pasted on the blank
side of the paper with the relevant information written on the adjacent page.
f. The presentation can be supported by newsletters, charts, brochures, quotes, cards,
collage, mind maps etc.
Marking Scheme
1. Relevance of the topic 3 marks
2. Knowledge Content/Research Work 6 marks
3. Presentation Technique 3 marks
4. Viva_ voce 8 marks
Total 20 marks
Suggested Topics
1. Trade wars and their implications
2. Agriculture in India
3. Infrastructure and its role in development
4. Inflation-causes and consequences
5. Shift towards a cashless economy
6. Aviation industry in India
7. Sustainable development - need of the hour
8. Education in India-Changes and implications
9. Impact of sports on Indian economy
10. Stock prices and their impact on economy
11. Human Resource Development
12. US Iran sanctions
13 Bangladesh - the next Asian tiger
14. Food Security/ Food wastage and its implications
2. What is the file extension of Python module file?
3. Name any 2 built-in modules and also 2 function belonging to each category.
4. List any two advantages of modules?
5. Raj is a Python programmer and creating a project on some statistical application. For some functionality he requires the module statistics. Help Raj to correctly import this module so that all the functionality of statistics will be available in the program.
6. As Raj started coding, he realized he is actually using only single function median() from the module statistics. Now he wants to reduce the load and import only single function from the module statistics. Help Raj to write the
correct way to import so that only single function will be imported from statistics.
7. Fill in the blanks to import all the name from given module:
from statistics import
8. Raj is a Python programmer and he has imported the module math, and from this math module he wants to use the function sqrt() to calculate square root of
n. But he forgot how to use function from imported module. Help Raj to use the function sqrt().
import math n = int(input("Enter number "))
num = # statement to call sqrt() function for value
n print(num)
9. Write the missing statements:
from math import sqrt,pow print( ) # To calculate square root of
144 print( ) # To calculate (3)7
print(math.sqrt(121)) # This statement will work or not? If not, give reason. 10. Give the name of the required module for the given functions?
(i) randrange() (ii) mean()
(iii) dump() (iv) sin()
11. function is used to get all information about module i.e. name of all
functions, variables, etc available in that module.
Part C - RECURSION
1. Which is the most appropriate definition for recursion?
a) A function that calls itself b) A function execution instance that calls another execution instance of the same function c) A class method that calls another class method d) An in-built method that is automatically called
2. To end the recursive function, it must include
3 What happens if the base condition isn’t defined in recursive programs?
a) Program gets into an infinite loop
b) Program runs once
c) Program runs n number of times where n is the argument given to the function d) An exception is thrown
4 Which of these is false about recursion?
a) Recursive function can be replaced by a non-recursive function
b) Recursive functions usually take more memory space than non-recursive function
c) Recursive functions run faster than non-recursive function d) Recursion makes programs easier to understand
5 Execution of recursive calls in recursion is in which order (Choose correct option)
1. Sequential 2. Reverse
6 Define a recursive SCREENSAVER() function which displays “Welcome to my PC” infinite
times.
7 Fill in the line of the following Python code for calculating the factorial of a number. def fact(n):
if n==1:
return 1
else:
return
a) n * fact(n-1)
b) (n-1) * (n-2)
c) n * (n-1) d) fact(n) * fact(n-1)
8 Define a recursive function FACT(n) to calculate and return the factorial of n
9 Define a recursive function SUM1TON(n) to calculate sum of all the number from 1 to n
10 Define a recursive function FIBO(n) to generate Fibonacci series for first n numbers For e.g. if n is 6, the numbers to generate are 0 1 1 2 3 5