A. Flood
B. Cyclone
C. Decrease in food productivity
D. All A., B. and C.
A. Chlorine
B. Irradiation of water by ultraviolet light
C. Cation exchanger
D. Coagulation
A. Bone decay
B. Cancer
C. Asphyxiation (suffocation)
D. Anemia
A. Bag filter
B. Scrubber
C. Electrostatic precipitator
D. Cyclone separator
A. Hydrochloric acid
B. Lime
C. Copper sulphate
D. Sodium sulphate
A. Of clotting of blood
B. Of jamming of respiratory tract
C. It forms carboxyhemoglobin by combining with haemoglobin of blood, thereby making it
incapable of absorbing oxygen
D. It forms CO2 by combining with oxygen present in the blood
A. 1
B. 10
C. 250
D. 1000