A. Blood poisoning
B. Anaemia
C. Nervous system disorder
D. All A., B. & C.
A. Allows visible solar radiation (ultraviolet) of short wave-length to pass through
B. Reflects and absorbs the longer wavelength (infra-red) radiations
C. Prevents solar heat being radiated out completely, resulting in ‘heat trap’ i.e., global warming
D. All A., B. and C.
Higher concentration of CO2 in atmosphere_____________________? Read More »
Chemical Environmental Engineering A. NOx
B. Hg
C. SO2
D. F
A. Smoke
B. Powder
C. Grit
D. Aggregates
80% less than 200 mesh size particles are called____________________? Read More »
Chemical Environmental Engineering A. Suppression of noise at the source itself
B. Path control of noise
C. Protection of operating personnel
D. All A., B. & C.
High noise level in a chemical plant can be controlled by the_________________? Read More »
Chemical Environmental Engineering A. Arizona (U.S.A.)
B. Chernobyl (undivided U.S.S.R.)
C. Pennsylvania (U.S.A.)
D. Moscow (U.S.S.R.)
A. Dermatitis (skin disorder)
B. Cancer
C. Asphyxiation (suffocation)
D. Asthma
Exposure to chemicals having carcinogenic properties cause ____________________? Read More »
Chemical Environmental Engineering A. 35
B. 75
C. 95
D. 105
A. 1-2
B. 5-10
C. 90-120
D. 1500-2500
COD of raw municipal sewage may be in the range of about _____________ mg/litre? Read More »
Chemical Environmental Engineering A. Coal
B. Uranium ore
C. Iron ore
D. Lime
‘Pneumoconiosis’ is a disease caused by the inhalation of ______________ dust? Read More »
Chemical Environmental Engineering