ENVIRONMENTAL ISSUES biology MCQ’s questions answers

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ENVIRONMENTAL ISSUES

Question 146 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Lichens indicate pollution by ..... [B.H.U. 2012]
A
SO2
B
NO2
C
CO
D
O3
Question 147 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Green house effects is due to ..... [C.B.S.E. 2002]
A
X-rays
B
UV rays
C
Green rays
D
Infrared rays
Question 148 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A chemical used in refrigerators and air conditioners and is a source of Cl-..... [Guj .C.E.T. 2007]
A
Benzene
B
CH4
C
Benzopyrene
D
Freon
Question 149 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
UV radiations cause ..... [B.H.U. 2012]
A
Formation of thymine dimers
B
Addition of base pairs
C
Deletion of base pairs
D
Methylation of bases
Question 150 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Drinking mineral water with low levels (~0.02 ppm) of pesticide for long period would ..... [A.I.I.M.S. 2003]
A
Cause cancer of intestine
B
Pesticide accumulation in the body
C
Cause leukaemia
D
Produce immunity against mosquito
There are 150 questions to complete.