EASY
RRB NTPC CBT 1
IMPORTANT
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The major harmful gas emitted by automobile vehicles which causes air pollution is : 

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Important Questions on Chemistry

EASY
RRB NTPC CBT 1
IMPORTANT
Acid rain is caused due to the pollution of atmosphere by : 
EASY
RRB NTPC CBT 1
IMPORTANT
Ozone layer in the upper parts of the atmosphere serves as a protective shield against harmful : 
EASY
RRB NTPC CBT 1
IMPORTANT
The function of sedimentation tank in sewage treatment is to : 
MEDIUM
RRB NTPC CBT 1
IMPORTANT
Photochemical smog is a resultant of the reaction among : 
EASY
RRB NTPC CBT 1
IMPORTANT

Which of the following can be found as pollutants in the drinking water in some parts of India?
1) Arsenic 
2) Sorbitol 
3) Fluoride 
4) Formaldehyde 
5) Uranium