
Question 1:
What are viable and non-viable particulates?
Question 2:
What is acid rain? What are its harmful effects?
Question 3:
What are different sources of soil-pollution?
Question 4:
What is the role of CO2 in the greenhouse effect?
Question 5:
What is BOD?
Question 6:
Why is COD preferred over BOD?
Question 7:
What is siltation?
Question 8:
What are main sources of thermal pollution?
Question 9:
Why there is ozone depletion mainly over Antarctica?
Question 10:
Which gases are major air pollutants?
Question 11:
In which season the depletion of ozone on Antarctica takes place and when it is replenished?
Question 12:
Give three examples in which green chemistry has been applied?
Question 13:
Why is acid rain considered as threat to Taj Mahal?
Question 14:
What is Chlorosis?
Question 15:
What is anoxia or asphyxiation?
Question 16:
Explain giving reasons. ‘The presence of CO reduces amount of haemoglobin available in the blood for carrying oxygen to the body cells’.
Question 17:
Oxygen plays a key role in troposphere while ozone in stratosphere. Explain.
Question 18:
Why does rain water have a pH of about 5 – 6?
Question 19:
What are secondary pollutants? Give two examples.
Question 20:
What is humification?
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