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Subject :NSO    Class : Class 4

Which of the following will NOT cause environmental pollution?

AUsing fossils like coal, diesel and petrol more than CNG.
BDischarging wastes only into oceans and not into rivers or ponds.
CUsing less biodegradable materials than non-biodegradable materials.
DReducing the usage of chemical fertilizers and pesticides.

Ans 1:

Class : Class 4

Ans 2:

Class : Class 3

Ans 3:

Class : Class 3

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