Write two uses of $PCBs$.
$(i)$ As a fertilizer
$(ii)$ As a Detergent in cleaning
Which of these reactions is not a part of breakdown of ozone in stratosphere?
What are the major causes of water pollution? Explain.
Mention the components of photochemical song and its effects.
List gases which are responsible for greenhouse effect.
Give information on uses of green chemistry in day to day life.
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