set 2 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general science mcq - 3 EXERCISES
The following question based on environmental chemistry topic of general science mcq
(a) Cobalt sulphate
(b) Copper sulphate
(c) Aluminium sulphate
(d) Nickel sulphate
The correct answers to the above question in:
Answer: (c)
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Read more environmental chemistry Based General Science Questions and Answers
Question : 1
Which one of the following is another name of RDX?
a) Cyclohexane
b) Dextran
c) Cyanohydrin
d) Cyclonite
Answer »Answer: (d)
Question : 2
DDT is a –
a) antibiotics
b) biodegradable pollutant
c) non-biodegradable pollutant
d) none of the above
Answer »Answer: (c)
Question : 3
The greenhouse effect is because of the
a) presence of CO2 only in the atmosphere
b) pressure of O3 and CH4 in the atmosphere
c) presence of gases, which in general are strong infrared absorbers, in the atmosphere
d) N2O and chlorofluorohydrocarbons in the atmosphere
Answer »Answer: (c)
Greenhouse gases such as CO2, ozone, methane, chlorofluorocarbon compounds and water vapour from a thick cover around the earth prevent the IR rays emitted by the earth to escape.
It gradually leads to an increase in the temperature of the atmosphere.
Question : 4
Which of the following is not a synthetic fibre:
a) Nylon
b) Rayon
c) Angora
d) Polyester
Answer »Answer: (c)
Question : 5
Minimata disease is a pollution-related disease, which results from –
a) accumulation of arsenic into atmosphere
b) release of industrial waste mercury into fishing water
c) release of human organic waste into drinking water
d) oil spills into sea
Answer »Answer: (b)
Question : 6
Eutrophication causes reduction in
a) nutrients
b) dissolved salts
c) dissolved oxygen
d) All of these
Answer »Answer: (c)
Eutrophication causes reduction in D.O.
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