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
The percentage of carbon dioxide in the air is ______________
- A0.02-0.04 %
- B20-40 %
- C2- 4 %
- D0.20-0.04 %Correct
2
Increased humidity means increased presence of ______________ in air.
- ACarbon dioxide gas
- BWater vapourCorrect
- CDust particles
- DPollen grain
3
Which type of air does not contain water vapour?
- APolluted air
- BDry airCorrect
- CMoist air
- DWarm air
4
Seeds and fruits of plants are dispersed with the help of
- AInsects only
- BBirds only
- CAirCorrect
- DWater only
5
Aquatic organisms get oxygen for respiration from
- AWaterCorrect
- BBreaking water
- CBeneath the soil layer
- DAtmosphere
6
Which of the following is not a use of air?
- AWinnowing
- BPhotosynthesis
- CMelting of iceCorrect
- DRespiration
7
Wind mill is used to produce
- AWater
- BElectricityCorrect
- CAir
- DMoisture
8
Air exert
- AMass
- BWeight
- CPressureCorrect
- DHeat
9
Air is a
- ASolution
- BMixtureCorrect
- CSuspension
- DCompound
10
Ozone layer in atmosphere protect us from
- AUV raysCorrect
- BLung disease
- CPathogen
- DInfra red
11
The nitrogen content in air is
- A88%
- B78%Correct
- C68%
- D21%
12
Combustion of coal produce
- ACarbon dioxide gasCorrect
- BNitrogen
- CWater vapour
- DOxygen
13
During photosynthesis, the gas released is
- AOxygenCorrect
- BCarbon dioxide
- CSulpher dioxide
- DNitrogen
14
Which device can be used to remove air in the tin can?
- AAudio player
- BRefrigerator
- CVacuum pumpCorrect
- DJMG
15
Lowermost layer of atmosphere is called
- AIonosphere
- BTroposphereCorrect
- CStratosphere
- DMesosphere