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Subject :NSO    Class : Class 5

What should a car-driver do to reduce the pollution caused by his car?

ARun car on diesel instead of petrol.
BUse catalytic converter in car.
CTie plastic bag around the exhaust pipe.
DNone of these

too much to expect me to know what a catalytic converter..

Ans 1:

Class : Class 5
OK thanks to tell my mistake especially in this question which was confusing and nice too..

Ans 2:

Class : Class 5

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