A. Soil pollutant
B. Water pollutant
C. Air pollutant
D. Noise pollutant
Pollution
Pollution
A. Caused by CO2 only
B. Caused by CH4, SO2, NO2 gases
C. Caused by those gases which absorb the infra-red light reflecting from earth
D. Caused by combination of many gases
A. Acid rain
B. Smog
C. Both (a) & (b)
D. None of these
A. Ammonia
B. Phytoplankton
C. Industrial effluents
D. Smoke
A. CO
B. CO2
C. NO2
D. PO4
A. Hardness of water
B. Industrial pollution
C. Sewage pollution
D. Presence of chlorine in water
A. 10-20 dB
B. 40-60 dB
C. 90-12 dB
D. 120-150 dB
A. Global warming
B. Acid rain
C. Greenhouse effect
D. The UV radiations reach the earth
A. Hg
B. Cd
C. Pb
D. Cu
A. Sulphur di-oxide
B. Carbon di-oxide
C. Chloro-fluoro-carbon
D. Smog