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1.
In scrubber, the exhaust is passed through a
2.
During day time, sound level is silent zone is
3.
In India, Jhum cultivation is practiced mainly in
4.
The unfavorable alteration of environment due to human activities is termed as
5.
and 
are called green house gases, because they can absorb
and are called green house gases, because they can absorb
6.
Which one of the following is a correct option with reference to pathogenic bacteria and DDT?
7.
Expanded from of BOD is
8.
Relative Biological Effectiveness (RBE) usually refers to the damage caused by
9.
Consider the following statements about pollution
I. Pollution is an undesirable change in physical, chemical or biological characteristics of air, land, water or soil
II. The air act was amendid in 1987 to include noise as air pollutant
III. In order to control environmental pollution, the Government of India has passed the environment Protection Act, 1976 to protect and improve the quality of our environment
Which of the statements given above are correct?
I. Pollution is an undesirable change in physical, chemical or biological characteristics of air, land, water or soil
II. The air act was amendid in 1987 to include noise as air pollutant
III. In order to control environmental pollution, the Government of India has passed the environment Protection Act, 1976 to protect and improve the quality of our environment
Which of the statements given above are correct?
10.
The possible beneficial aspect of grazing animals is the