Chemical Environmental Engineering

A. Smoke
B. Powder
C. Grit
D. Aggregates

A. Suppression of noise at the source itself
B. Path control of noise
C. Protection of operating personnel
D. All A., B. & C.

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

A. 35
B. 75
C. 95
D. 105

A. 1-2
B. 5-10
C. 90-120
D. 1500-2500

A. Coal
B. Uranium ore
C. Iron ore
D. Lime

A. 1000 to 2000
B. 3000 to 6000
C. 6000 to 9000
D. 10000 to 100000

A. 75
B. 95
C. 120
D. 140

A. Coal
B. Silica
C. Iron
D. None of these