Which of the following air pollutants is not toxic to vegetation i.e., doesn’t cause vegetation damage ?

Related Mcqs:

High noise levels produced during operation of fans and compressors can be reduced by using__________________?

A. Mufflers (silencers) B. Acoustic absorbent C. Lagging of noisy duct D. None of these...

Which of the following radioactive wastes emits all α, β & γ rays and hence is the most hazardous of all radioactive emitters ?

A. I-131 B. Sr-90 C. Au-198 D. Ra-226...

Noise level heard at a distance of about 100 metres from a jet engine with after burner is about _____________ decibels?

A. 120 B. 140 C. 170 D. 200...

Phenolic water generated in coke ovens & by-product plant of a steel plant are disposed off by_________________?

A. Quenching of hot coke B. Discharging in the river stream C. Filtration and recycling for cooling coke oven gas D. None of these...

Limestone powder is injected during pulverised coal burning in boilers to ______________ the flue gases?

A. Reduce SO2 content in B. Catalytically convert SO2 to SO3 in C. Increase the dew point of D. None of these...