700001231 ICSE X Chemistry questions sample papers 1 20150320192619
ICSE X | CHEMISTRY
Board Paper – 2015
ICSE Board
Class X Chemistry
Board Paper – 2015
Time: 2 hrs
Max. Marks: 80
Answers to this Paper must be written on the paper provided separately.
You will not be allowed 10 write during the first 15 minutes.
This time is to be spent in reading the Question Paper.
The time given at the head of this paper is the time allowed for writing the answers.
Section I is compulsory. Attempt any four questions from section II.
The intended marks for questions or parts of questions are given in brackets [ ]
SECTION I (40 Marks)
Attempt all questions from this Section
Question 1
(a) Select from the list the gas that matches the description given in each case:
[ammonia, ethane, hydrogen chloride, hydrogen sulphide, ethyne]
(i) This gas is used as a reducing agent in reducing copper oxide to copper.
(ii) This gas produces dense white fumes with ammonia gas.
(iii) This gas is used for welding purposes.
(iv) This gas is also a saturated hydrocarbon.
(v) This gas has a characteristic rotten egg smell.
[5]
(b) Choose the most appropriate answer for each of the following:
(i) Among the elements given below, the element with the least electronegativity is: (A) Lithium
(B) Carbon
(C) Boron
(D) Fluorine
(ii) Identify the statement which does not describe the property of alkenes:
(A) They are unsaturated hydrocarbons
(B) They decolourise bromine water
(C) They can undergo addition as well as substitution reactions
(D) They undergo combustion with oxygen forming carbon dioxide and water.
(iii) This is not an alloy of copper:
(A) Brass
(B) Bronze
(C) Solder
(D) Duralumin.
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1
ICSE X | CHEMISTRY
Board Paper – 2015
(iv) Bonding in this molecule can be understood to involve coordinate bonding.
(A) Carbon tetrachloride
(B) Hydrogen
(C) Hydrogen chloride
(D) Ammonium chloride
(v) Which of the following would weigh the least?
(A) 2 gram atoms of Nitrogen.
(B) 1mole of Silver
(C) 22.4 litres of oxygen gas at 1 atmospheric
Board Paper – 2015
ICSE Board
Class X Chemistry
Board Paper – 2015
Time: 2 hrs
Max. Marks: 80
Answers to this Paper must be written on the paper provided separately.
You will not be allowed 10 write during the first 15 minutes.
This time is to be spent in reading the Question Paper.
The time given at the head of this paper is the time allowed for writing the answers.
Section I is compulsory. Attempt any four questions from section II.
The intended marks for questions or parts of questions are given in brackets [ ]
SECTION I (40 Marks)
Attempt all questions from this Section
Question 1
(a) Select from the list the gas that matches the description given in each case:
[ammonia, ethane, hydrogen chloride, hydrogen sulphide, ethyne]
(i) This gas is used as a reducing agent in reducing copper oxide to copper.
(ii) This gas produces dense white fumes with ammonia gas.
(iii) This gas is used for welding purposes.
(iv) This gas is also a saturated hydrocarbon.
(v) This gas has a characteristic rotten egg smell.
[5]
(b) Choose the most appropriate answer for each of the following:
(i) Among the elements given below, the element with the least electronegativity is: (A) Lithium
(B) Carbon
(C) Boron
(D) Fluorine
(ii) Identify the statement which does not describe the property of alkenes:
(A) They are unsaturated hydrocarbons
(B) They decolourise bromine water
(C) They can undergo addition as well as substitution reactions
(D) They undergo combustion with oxygen forming carbon dioxide and water.
(iii) This is not an alloy of copper:
(A) Brass
(B) Bronze
(C) Solder
(D) Duralumin.
www.topperlearning.com
1
ICSE X | CHEMISTRY
Board Paper – 2015
(iv) Bonding in this molecule can be understood to involve coordinate bonding.
(A) Carbon tetrachloride
(B) Hydrogen
(C) Hydrogen chloride
(D) Ammonium chloride
(v) Which of the following would weigh the least?
(A) 2 gram atoms of Nitrogen.
(B) 1mole of Silver
(C) 22.4 litres of oxygen gas at 1 atmospheric