HARD
11th CBSE
IMPORTANT
Earn 100

  Column I   Column II
(i) Phosphate fertilizers in water (a) BOD level of water increases
(ii) Methane in air  (b) Acid rain 
(iii) Synthetic detergents in water (c) Global warning
(iv) Nitrogen oxides in air (d) Eutrophication

 

Important Questions on Environmental Chemistry

HARD
11th CBSE
IMPORTANT
NCERT Exemplar Chemistry - Class 11>Chapter 14 - Environmental Chemistry>Long Answer Type>Q 46
How can you apply green chemistry for the following:
To control photochemical smog.
MEDIUM
11th CBSE
IMPORTANT
NCERT Exemplar Chemistry - Class 11>Chapter 14 - Environmental Chemistry>Long Answer Type>Q 46
How can you apply green chemistry for the following:
To avoid the use of halogenated solvents in dry cleaning and that of chlorine bleaching. 
EASY
11th CBSE
IMPORTANT
NCERT Exemplar Chemistry - Class 11>Chapter 14 - Environmental Chemistry>Long Answer Type>Q 46
How can you apply green chemistry for the following:
 To reduce the use of synthetic detergents. 
MEDIUM
11th CBSE
IMPORTANT
NCERT Exemplar Chemistry - Class 11>Chapter 14 - Environmental Chemistry>Long Answer Type>Q 46
How can you apply green chemistry for the following:
To reduce the consumption of petrol and diesel.
HARD
11th CBSE
IMPORTANT
NCERT Exemplar Chemistry - Class 11>Chapter 14 - Environmental Chemistry>Long Answer Type>Q 47
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?  
HARD
11th CBSE
IMPORTANT
NCERT Exemplar Chemistry - Class 11>Chapter 14 - Environmental Chemistry>Long Answer Type>Q 48
Explain how does the greenhouse effect cause global warming.
MEDIUM
11th CBSE
IMPORTANT
NCERT Exemplar Chemistry - Class 11>Chapter 14 - Environmental Chemistry>Long Answer Type>Q 49
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?  
HARD
11th CBSE
IMPORTANT
NCERT Exemplar Chemistry - Class 11>Chapter 14 - Environmental Chemistry>Long Answer Type>Q 50

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.