Geography - Questions and Answers, General Study (GK)

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Geography - Questions and AnswersPage 17

161.

Of the following which one pollutes the air of a big city?

(a)Copper

(b)Chromium

(c)Lead

(d)Calcium

Comment

Answer is: CNA

162.

Ozone layer above the surface of Earth provides a shield against

(a)X-rays

(b)UV rays

(c)Gamma rays

(d)IR rays

Comment

Answer is: BNA

163.

The permissible upper limit of Arsenic in water is

(a)0.005 gm/litre

(b)0.005 mg/litre

(d)0.05 gm/litre

Comment

Answer is: CNA

164.

Ground water in the Bengal basin is mostly contaminated by

(a)chromium

(b)lead

(c)cadmium

(d)arsenic

Comment

Answer is: DNA

165.

Heavy metal pollution of water is caused by

(a)domestic sewage

(b)wood burning

(c)acid plants

(d)paints

Comment

Answer is: ANA

166.

Supersonic jet causes pollution by thinning of

(a)O₃ layer

(b)C₂ layer

(c)SO₂ layer

(d)O₂ layer

Comment

Answer is: ANA

167.

Biodegradable wastes can usually be converted into useful substances with the help of

(a)bacteria

(b)nuclear proteins

(c)radioactive substances

(d)viruses

Comment

Answer is: ANA

168.

Which of the following is biodegradable?

(a) Paper

(b)DDT

(c)Aluminium

(d)Plastic

Comment

Answer is: ANA

169.

Which one among the following groups of items contains only biodegradable items?

(a)Wood, grass, plastic

(b)Wood, grass, leather

(c)Fruit peels, lime juice, China clay up

(d)Lime juice, grass, polystyrene cup

Comment

Answer is: BNA

170.

Which one among the following industries produces the most non-biodegradable wastes?

(a)Thermal power plants

(b)Food processing units

(c)Textile mills

(d)Paper mills

Comment

Answer is: ANA

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Geography - Questions and AnswersPage 17

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