NCERT Solutions for Chapter: Environmental Chemistry, Exercise 1: Long Answer Type

How can you apply green chemistry for the following:
To control photochemical smog.

How can you apply green chemistry for the following:
To avoid the use of halogenated solvents in dry cleaning and that of chlorine bleaching. 

How can you apply green chemistry for the following:
 To reduce the use of synthetic detergents. 

How can you apply green chemistry for the following:
To reduce the consumption of petrol and diesel.

Green plants use carbon dioxide for photosynthesis and return oxygen to the atmosphere, even then carbon dioxide is considered to be responsible for the greenhouse effect. Explain why?  

Explain how does the greenhouse effect cause global warming.

A farmer was using pesticides on his farm. He used the produce of his farm as food for rearing fishes. He was told that fishes were not fit for human consumption because a large number of pesticides had accumulated in the tissues of fishes. Explain how did this happen?  

For dry cleaning, in the place of tetrachloroethane, liquefied carbon dioxide with suitable detergent is an alternative solvent. What type of harm to the environment will be prevented by stopping use of tetrachloroethane? Will the use of liquefied carbon dioxide with detergent be completely safe from the point of view of pollution? Explain. 

NOTE:- In question they mentioned tetrachloroethane but it might be tetrachloroethene.