Environmental Engineering MCQ Questions & Answers | Chemical Engineering

A. Alum (aluminium sulphate)

B. Lime

C. Ferric chloride

D. Sodium aluminate

A. Hydrogen sulphide

B. Mercury

C. Cadmium

D. Asbestos

A. Deforestation

B. Rapid industrialisation

C. Increased transportation activity

D. All of the above

A. 20

B. 100

C. 400

D. 200

A. Asphyxiation

B. Shortness of breath

C. Tuberculosis

D. Both B & C

A. Noise from ball mills can be dealt with by fibre glass lined enclosures

B. Noise from vibrating chutes can be reduced by lining the metallic chute with rubber

C. Noise of conveyor belt system is reduced by using urethane coated cloth conveyor belts and rubber/plastic covered metallic rollers

D. All of the above

A. Packed scrubber

B. Gravity settling chamber

C. Electrostatic precipitator

D. Hydrocyclone

A. 0.1

B. 1

C. 5

D. 25

A. Caustic embrittlement of boiler's metallic parts is caused by high concentration of caustic soda in boiler feed water

B. Cooling and freezing of water kills the bacteria present in it

C. With increasing boiler operating pressure of steam, the maximum allowable concentration of silica in feed water goes on decreasing

D. Dissolved oxygen content in high pressure boiler feed water should be nil

A. Fats

B. Carbohydrates

C. Salts of metals

D. Protein