Previous Year Paper year:2009 : ICSE-X-Chemistry

Home Learn Fast select Course

Change Unit Change Subject Last Menu

ICSE-X-Chemistry

Previous Year Paper year:2009

with Solutions -

#
Board Paper 2009
ICSE Board
Class X Chemistry
Time: 1.5 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.
The time given at the head of t h i s paper is the time allowed for writing the
answers.
This question paper is divided into two sections.
3. Section I contains one question with parts (a) to (h); all the eight parts are to be
answered.
4. Section II contains six questions numbered 2 to 7. You are to answer any four of these
questions.
The intended marks of questions or for parts of questions are given in brackets [ ].

# [40]
Section : I
Attempt all questions from this section.

#1

#1-a [5]
Name the gas evolved in each case (formula is not acceptable).

#1-a-i
i. The gas produced by the action of concentrated sulphuric acid on sodium chloride.
Ans : Hydrogen chloride gas

#1-a-ii
ii. The gas produced by the action of dilute nitric acid on copper.
Ans : Nitric oxide

#1-a-iii
iii. The gas produced on heating sodium nitrate.
Ans : Oxygen

#1-a-iv
iv. The gas which burns in oxygen with a green flame.
Ans : Ammonia

#1-a-v
v. The gas which can be oxidised to sulphur. **
Ans : Hydrogen sulphide

#1-b [5]
Match each substance A to E listed below with the appropriate description in parts (i)
to (v).
(A) Sulphur (B) Silver chloride (C) Hydrogen chloride (D) Copper (II) sulphate
(E) Graphite

#1-b-i
i. A non-metal which is a good conductor of electricity.
Ans : (E)

#1-b-ii
ii. A covalent compound which behaves like an ionic compound in aqueous solution.
Ans : (C)

#1-b-iii
iii. A compound which is insoluble in cold water but soluble in excess of ammonia
solution.
Ans : (B)

#1-b-iv
iv. A pink metal which is deposited at the cathode during the electrolysis of the solution
of this salt.
Ans : (D)

#1-b-v
v. A non-metal which reacts with concentrated nitric acid to form its own acid as one
of the product.
Ans : (A)