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161.

Carbon monoxide is a pollutant because:

A.	It reacts with O2	B.	It inhibits glycolysis
C.	Reacts with haemoglobin	D.	Makes nervous system inactive

162.

The main cause of pollution in metro cities is due to:

A.	Industries	B.	Automobiles
C.	Home fuel	D.	Trees

163.

Which of the following isotopes is most dangerous to Homo sapiens?

A.	P32	B.	Sr90
C.	Cs137	D.	I131

164.

Which important greenhouse gas other than methane is being produced from the agricultural fields?

A.	Arsine	B.	SO2
C.	NH3	D.	N2O

165.

The major contributor to green house gases to the atmosphere is:

A.	Russia	B.	USA
C.	Brazil	D.	Germany

166.

In Minimata Bay, Japan, which of the following animals remained free from Minimata disease?

A.	Dogs	B.	Pigs
C.	Cats	D.	Rabbits

167.

Major pollutant present in the jet plane emission is:

A.	CCI4	B.	SO2
C.	CO	D.	Fluoro-carbon

168.

Leaf curling is caused by:

A.	SO2	B.	O2
C.	H2S	D.	CO

169.

Which of the following is a secondary pollutant?

A.	CO	B.	CO2
C.	PAN	D.	Aerosol

170.

Water pollution:

A.	Increases oxygenation	B.	Decreases turbidity
C.	Increases turbidity deoxygenation	D.	Increases photosynthesis