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
Finer hair inside the nose
  • A
    Filter the microbes
  • B
    Prevent the carbon dioxide gas
  • C
    Prevent the water vapour
  • D
    Filter the dust particle
    Correct
2
In soil air is present
  • A
    Below the soil
  • B
    Inside the particles
  • C
    In between particles
    Correct
  • D
    Above the soil
3
Plants produce oxygen during photosynthesis and animals produce _______________ during respiration.
  • A
    Nitrogen
  • B
    Carbon dioxide
    Correct
  • C
    Water vapour
  • D
    Oxygen
4
During rain under soil organisms comes out to
  • A
    Respire
    Correct
  • B
    Expire
  • C
    Enjoy cool weather
  • D
    Intake oxygen
5
Which of the following disturbs the ecological balance?
  • A
    Deforestation
    Correct
  • B
    Photosynthesis
  • C
    Transpiration
  • D
    Respiration
6
Plants and animals are interdependent to each other for
  • A
    Food
  • B
    Water
  • C
    Exchange of gases
    Correct
  • D
    Minerals
7
Seeds and fruits of plants are dispersed with the help of
  • A
    Birds only
  • B
    Insects only
  • C
    Water only
  • D
    Air
    Correct
8
Breathing through mouth may harm us because
  • A
    Nose remove the carbon dioxide
  • B
    Mouth is larger in size
  • C
    Air contain more carbon dioxide
  • D
    Air is not get filtered
    Correct
9
Nitrogen gas in air
  • A
    Help in combustion
  • B
    Used in photosynthesis
  • C
    Prevents the combustion
    Correct
  • D
    Used in respiration
10
If carbon dioxide is removed from air than
  • A
    Plant will not respire
  • B
    Microbes will not reproduce
  • C
    Animals will not prepare food
  • D
    Plant will not photosynthesis
    Correct
11
While water is boiled in a beaker, bubbles are formed as
  • A
    Water is colourless and tasteless
  • B
    Water is a mixture
  • C
    Water is decomposed into hydrogen and oxygen
  • D
    Water contain dissolved oxygen
    Correct
12
Which component of air is used for fire extinguishers?
  • A
    Hydrogen
  • B
    Oxygen
  • C
    Carbon dioxide gas
    Correct
  • D
    Nitrogen
13
Which gas is taken by plants to prepare their food?
  • A
    Oxygen
  • B
    Hydrogen
  • C
    Nitrogen
  • D
    Carbon dioxide
    Correct
14
If oxygen is removed from air than
  • A
    Plants are not able to prepare food
  • B
    No living organism will survive
    Correct
  • C
    Only plant can survive
  • D
    Only animals can survive
15
Tiny shining particles moving in beam of sunlight is
  • A
    Oxygen particles in air
  • B
    Nitrogen particles in air
  • C
    Dust in air
    Correct
  • D
    Water vapour in air