ICSE Board Class IX Chemistry Paper - 3 Time: 2 hrs Total Marks: 80 General Instructions: 1. Answers to this paper must be written on the paper provided separately. 2. You will not be allowed to write during the first 15 minutes. This time is to be spent in reading the question paper. 3. The time given at the head of the paper is the time allotted for writing the answers. 4. Attempt all questions from Section I and any four questions from Section II. 5. The intended marks of questions or parts of questions are given in brackets [ ]. SECTION I (40 Marks) Attempt all questions from this section. Question 1 (a) Define: i. Valency ii. Solute iii. Cation iv. Symbol v. Element [5] (b) State the type of chemical reactions of the following: i. 2Pb(NO3)2 2PbO + 4NO2 + O2 ii. C + O2 CO2 iii. 2CO + O2 2CO2 iv. CuCO3 CuO + CO2 v. NH4Cl cool NH3 + HCl. [5] 1
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ICSE Board
Class IX Chemistry
Paper - 3
Time: 2 hrs Total Marks: 80
General Instructions:
1. Answers to this paper must be written on the paper provided separately.
2. You will not be allowed to write during the first 15 minutes.
This time is to be spent in reading the question paper.
3. The time given at the head of the paper is the time allotted for writing the answers.
4. Attempt all questions from Section I and any four questions from Section II.
5. The intended marks of questions or parts of questions are given in brackets [ ].
SECTION I (40 Marks)
Attempt all questions from this section.
Question 1 (a) Define:
i. Valency
ii. Solute
iii. Cation
iv. Symbol
v. Element
[5]
(b) State the type of chemical reactions of the following:
i. 2Pb(NO3)2 2PbO + 4NO2 + O2
ii. C + O2 CO2
iii. 2CO + O22CO2
iv. CuCO3 CuO + CO2
v. NH4Clcool
NH3 + HCl.
[5]
1
(c) What does a balanced chemical equation convey? Explain in detail. [5]
(d) Write the formula of the following salts:
i. Mercury (II) nitrate/mercuric nitrate
ii. Sodium chlorate
iii. Calcium oxalate
iv. Sodium acetate
v. Cupric hydroxide [5]
(e) Write the formula and balance the following chemical equations:
i. Sodium hydroxide + Sulphuric acid Sodium sulphate + Water