CS/BOPTM/SEM-2/BO-204/2013
2013
ENVIRONMENT AND ECOLOGY
Time Allotted : 3 Hours Full Marks : 70
The figures in the margin indicate full marks.
Candidates are required to give their answers in their own words
as far as practicable.
GROUP – A
( Multiple Choice Type Questions )
1. Choose the correct answers for any ten of the following :
10 × 1 = 10
i) Stone cancer of Taj is caused by
a) Smog b) UV ray
c) Acid rain d) CFC.
ii) Aerosol is released by
a) Industries b) Supersonic jets
c) Automobiles d) Fertilizers.
iii) Which of the following is the main factor of water
pollution ?
a) Smoke b) Ammonia
c) Detergents d) Industrial wastes.
iv) BOD means
a) Biological oxygen demand
b) Biochemical oxygen demand
c) Biggest oxygen demand
v) Troposphere is distributed above the earth surface from
a) 0 –11 km b) 0 – 12 km
c) 0 – 8 km d) 0 – 6 km.