Class 6 Air Around Us CBSE Questions & Answers

Class 6 · Air Around Us

This is Science Class 6 Air around Us CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Empty bottle is full of
  • A
    Moisture
  • B
    Dust particles
  • C
    Air
    Correct
  • D
    Invisible microbes
2
Air is a mixture of
  • A
    Many gases
    Correct
  • B
    Carbon dioxide and oxygen
  • C
    Oxygen and nitrogen
  • D
    Hydrogen and hydrogen
3
Presence of air vapour in water is important for
  • A
    Water cycle
    Correct
  • B
    Wind motion
  • C
    Plants only
  • D
    Living organisms
4
The components of air that do not support combustion is
  • A
    Carbon monoxide
  • B
    Oxygen
  • C
    Carbon dioxide
  • D
    Nitrogen
    Correct
5
We feel suffocation in a room having burning something due to
  • A
    Accumulation of oxygen
  • B
    Accumulation of nitrogen
  • C
    Accumulation of carbon dioxide
    Correct
  • D
    Absence of carbon dioxide
6
In which of the following place concentration of dust particle is more?
  • A
    On hill stations
  • B
    In agricultural field
  • C
    Above the ocean
  • D
    Industrial area
    Correct
7
Fine hairs and mucus present in nose prevent the entry of
  • A
    Dust particles
    Correct
  • B
    Nitrogen gas
  • C
    Water vapour
  • D
    Carbon dioxide gas
8
When water is boiled, tiny air bubbles comes out that shows the
  • A
    Presence of oxygen in water
  • B
    Presence of microbes in water
  • C
    Presence of soil in water
  • D
    Presence of air in water
    Correct
9
Which two gases makes the 99% of air?
  • A
    Oxygen and helium
  • B
    Nitrogen and oxygen
    Correct
  • C
    Nitrogen and carbon dioxide
  • D
    Oxygen and carbon dioxide
10
Oxygen is used in hospitals for
  • A
    Burning wastage
  • B
    Fermentation
  • C
    Decomposition
  • D
    Artificial respiration
    Correct
11
During rain, soil animals comes out from their burrows for
  • A
    Regeneration
  • B
    Nutrition
  • C
    Respiration
    Correct
  • D
    Decomposition
12
Which of the following is essential for burning of candle?
  • A
    Carbon monoxide
  • B
    Oxygen gas
    Correct
  • C
    Nitrogen gas
  • D
    Water vapour
13
When empty bottle is placed in water and tilted, air bubble comes out because
  • A
    Bottle is empty
  • B
    Air do not occupies space
  • C
    Bottle is filled with air
    Correct
  • D
    Air is heavier than water
14
Air exerts pressure from
  • A
    Left and right sides only
  • B
    All sides
    Correct
  • C
    Bottom only
  • D
    Top only
15
The balance between carbon dioxide and oxygen is maintained by
  • A
    Evaporation and photosynthesis
  • B
    Transpiration and respiration
  • C
    Hydrogenation and combustion
  • D
    Photosynthesis and respiration
    Correct