Environmental Engineering MCQ Questions & Answers | Chemical Engineering

A. Grinding

B. Machining

C. Cutting

D. Polishing

A. Deforestation helps in controlling the green house effect

B. Global warming is detrimental for increase in food productivity and may cause flood and cyclone

C. Lightening discharges are natural source of production of SO₂ & H₂S pollutant

D. Sulphur dioxide causes death by asphyxiation

A. CO

B. CO₂

C. NO

D. Hydrocarbons

A. Using the activities of bacteria and other micro organisms

B. Aerobic oxidation

C. Both A & B

D. Neither A nor B

A. Mufflers (silencers)

B. Accoustical absorbent

C. Lagging of noisy duct

D. None of these

A. Biological oxygen demand (B.O.D.) value of a sewerage sample is always lower than its chemical oxygen demand (C.O.D.) value

B. Environmental pollution by NO_x emission is much higher by four stroke petrol engines as compared to the two stroke engines

C. Temperature in stratosphere rises with increasing altitude

D. The characteristic of a green house body is that it allows the long wavelength incoming solar radiation to come in but does not allow the short wavelength infra red radiation to escape out of the earth's atmosphere

A. Inversely proportional to viscosity of gas

B. Proportional to the viscosity & density of the gas

C. Proportional to the pressure of the gas

D. Both B and C

A. Acidic

B. Neutral

C. Alkaline

D. Highly acidic

A. 5

B. 50

C. 2000

D. 5000

A. By reaction of hydrocarbon & nitric oxide in presence of sunlight

B. Appears only on sunny days

C. Is harmful for crops and trees also besides causing eye irritation & asthma

D. All of the above