1000+ Environmental Engineering Questions and Answers Pdf - 1
Question: 1
Which of the following is not a component of biosphere?
(A) atmosphere
(B) lithosphere
(C) hydrosphere
(D) thermosphere
Ans: D
thermosphere
Question: 2
Which of the following is the most detrimental for water used in high pressure boiler?
(A) dissolved oxygen
(B) phenol
(C) silica
(D) turbidity
Ans: C
silica
Question: 3
Which of the following processes is involved in the biochemical treatment of sewage effluents?
(A) fermentation
(B) dehydration
(C) reduction
(D) oxidation
Ans: D
oxidation
Question: 4
Which of the following is a secondary air pollutant?
(A) dust particles
(B) nitrogen dioxide
(C) sulphur dioxide
(D) photochemical smog
Ans: D
photochemical smog
Question: 5
Most major source of air pollution in modern days is
(A) automobiles and industries
(B) dust storms
(C) volcanic eruptions
(D) forest fires
Ans: A
automobiles and industries
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