Category: Environmental Chemistry

A. 10
B. 100
C. 10000
D. 100000

A. volcanoes
B. electric sparks
C. combustion
D. all

A. 5 to 200 kg
B. 20-200 kg
C. 200-400 kg
D. 30-400 kg

A. troposphere
B. stratosphere
C. mesosphere
D. photosphere

A. sufficient NO
B. sunlight
C. less movement of air
D. winds

A. DO
B. BOD
C. COD
D. all of the above

A. KMnO4
B. Alums
C. Ozone
D. All

A. CFC
B. CO2
C. CO
D. Oxides of nitrogen

A. alum
B. nickel sulphate
C. copper sulphate
D. barium sulphate

A. CO
B. NO2
C. both a & b
D. none of the above