EASY
8th CBSE
IMPORTANT
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Incomplete combustion of fuel such as petrol and diesel gives 

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Important Questions on Pollution of Air and Water

MEDIUM
8th CBSE
IMPORTANT
The phenomenon of marble cancer is due to
MEDIUM
8th CBSE
IMPORTANT
Which of the following procedures will give you water free from all impurities? 
EASY
8th CBSE
IMPORTANT
 A pond contains clean water. Which of the following activities will produce the least pollution in water? 
MEDIUM
8th CBSE
IMPORTANT
Trees help in reducing the pollution of our environment. Lakhs of trees are planted by people in the month of July every year. The occasion is called 
EASY
8th CBSE
IMPORTANT
Which of the following is not a greenhouse gas?
EASY
8th CBSE
IMPORTANT
Name the chemicals which are used in refrigerators and air conditioners and damage ozone layer when released in air.
MEDIUM
8th CBSE
IMPORTANT
Name any two sources which cause air pollution due to suspended particulate matter.