Page 1 - 1-HA-Objective & Subjective

SAI INTERNATIONAL SCHOOL
Class - VI
Subject - Chemistry
Topic – Air Around Us
Sub-Topic – Composition of air - Nitrogen, oxygen and Carbon dioxide

Home Assignment
Objective Questions
1. The density of air.............................. C
a) Reduce with altitude.
b) Increase with altitude.
c) Remain fixed with altitude.
d) Both option b) and c).
2. The oxygen present in the air is used for A
a) Respiration.
b) Extinguishing fire.
c) Burning.
d) Both a) and c).
3. The gas released after respiration is C
a) Oxygen.
b) Carbon dioxide.
c) Nitrogen.
d) Inert gases.
4. The most abundant gas in the Earth’s atmosphere is U
a) Nitrogen.
b) Oxygen.
c) Argon.
d) Carbon dioxide.
5. Which gas does the mountaineer carry in the cylinder? U
a) Oxygen.
b) Chlorine.
c) Carbon dioxide.
d) Nitrogen.
6. The gas used for packaging food is...... A
a) Oxygen.
b) Carbon dioxide.
c) Nitrogen.
d) Helium.

Subjective Questions

Q. No. Questions Skill Marks

1. Name the following:- R 1
The constituent of air that helps in burning.
2. Fill in the blank:- U 1
The two main components of air are........ and..........
3. .DIRECTION: Each of these questions contains an Assertion `U 1
followed by Reason. Read them carefully and answer the

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