set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

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

Question : 2

Which of the following is not a synthetic fibre:

a) Nylon

b) Rayon

c) Angora

d) Polyester

Question : 3

Which of the following chemicals is used in foam fire extinguishers? [NDA]

a) Cobalt sulphate

b) Copper sulphate

c) Aluminium sulphate

d) Nickel sulphate

Question : 4

Statement I :
Phenyl is used as a household germicide.
Statement II :
Phenyl is phenol derivative and phenol is an effective germicide.

a) Statement I is true but Statement II is false

b) Both Statement I and Statement II are true but Statement II is NOT the correct explanation of Statement I

c) Both Statement I and Statement II are true and Statement II is the correct explanation of Statement I

d) Statement I is false but Statement II is true

Question : 5

Which one of the following statement is not true?

a) Concentration of DO below 6 ppm is good for the growth of fish.

b) Clean water would have a BOD value of less than 5 ppm.

c) pH of drinking water should be between 5.5 – 9.5.

d) Oxides of sulphur, nitrogen and carbon are the most widespread air pollutant.

Question : 6

Which one of the following is associated with the formation of brown air in traffic congested cities?

a) Carbon dioxide

b) Nitrogen oxide

c) Sulphur dioxide

d) Carbon monoxide