21- The symptoms of _______ pollutant poisoning are black patches, and cracks are observed on hand and feet skin. Also causes vomiting, abdominal, etc.
(A) Mercury
(B) Arsenic
(C) Chromium
(D) All of these
22- When the groundwater table in a dumping area is high, the method adopted for land filling is
(A) Trench
(B) Area
(C) Depression
(D) None of these
23- Following parameter(s) play important role in judging dispersion potential of air pollution of a particular locality
(A) Mixing depth
(B) Ventilation co-efficient
(C) Both (A) and (B)
(D) None of these
24- Why tropospheric ozone is harmful to living being?
(A) Due to contributing to earth’s albedo
(B) Due to formation of greenhouse gases
(C) Due to formation of photochemical smog and PAN
(D) None of these
25- Low albedo is contributed by _______
(A) River
(B) Ocean
(C) Snow
(D) None of the above
26- What is endogenous respiration?
(A) Discrete use of oxygen
(B) Less use of oxygen
(C) Higher amount of oxygen production
(D) Continual use of oxygen
27- The pH of pure rain water is _______.
(A) 4.5
(B) 5.6
(C) 8.5
(D) 7.0
28- Major criteria for considering an area as “hotspot”
(A) Ecological fragile
(B) Richness in endemic species and impact by human activities
(C) Richness in rare and endangered species
(D) All the these
29- Solid Waste may be termed as hazardous if it is
(A) Toxic, Corrosive, Ignitable and Reactive
(B) Toxic and Reactive
(C) Toxic, Corrosive and Ignitable
(D) Ignitable and Corrosive
30- Which of the following method is not used for desalination?
(A) Coagulation
(B) Distillation
(C) Reverse osmosis
(D) Freezing
ANSWERS:
21-(B), 22-(B), 23-(C), 24-(C), 25-(B), 26-(D), 27-(B), 28-(B), 29-(A), 30-(B)