Environmental Engineering MCQ Questions & Answers | Chemical Engineering

A. Turbidity

B. Caustic embrittlement

C. Suspended silica

D. Dissolved oxygen

A. Deaeration of feed water

B. Enhancing pH of feed water by adding alkali

C. Feeding sodium sulphite or hydrazine phosphate to the boilers, which combines with oxygen and prevents corrosion

D. All of the above

A. Ion exchange process

B. Oxidation followed by settling & filtration

C. Lime soda process or manganese zeolite process

D. Chlorination

A. Chlorine

B. Irradiation of water by ultraviolet light

C. Cation exchanger

D. Coagulation

A. Acetylene

B. Petrol vapor

C. Hydrogen

D. Carbon monoxide

A. Coal

B. Silica

C. Iron

D. None of these

A. Coal

B. Uranium ore

C. Iron ore

D. Lime

A. CO₂

B. SO₂

C. Hydrocarbons

D. CFC (chloro fluoro carbon)

A. Preheating of feed water

B. Reduction in hardness, silica & alumina in feed water

C. Keeping the pH value of feed water just below 7

D. Eliminating H₂S in feed water

A. Catalytic converter is fitted in automobiles to reduce carbon monoxide concentration in exhaust emissions

B. Inhalation of pollutant carbon monoxide results in death by asphyxiation

C. Sulphur dioxide is the main pollutant emitted from the exhaust of petrol driven automobiles

D. Decomposition of plants containing chlorophyll is a natural source of carbon monoxide in atmosphere