Biology - Questions and Answers, General Study (GK)

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371.

Rain water collected after 30 to 40 minutes of raining is not suitable for drinking because it

(a)Contains bacteria and dirt

(b)Contains dissolved toxic chemicals

(c)Is deficient in minerals

(d)Is acidic

Comment

Answer is: DNA

372.

Food wrapped in newspaper is likely to get contaminated with

(a)Lead

(b)Aluminium

(c)Iron

(d)Magnesium

Comment

Answer is: ANA

373.

Hydrophytes are

(a)Animals founds in sea

(b)Aquatic plants

(c)A plant disease

(d)A root less plant

Comment

Answer is: BNA

374.

Effect of pollution is mist marked on

(a)Natural balance of nature

(b)Natural flora of place

(c)Natural geochemical cycles

(d)All of the above

Comment

Answer is: ANA

375.

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

(a)Food processing units

(b)Thermal power plants

(c)Textile mills

(d)paper mills

Comment

Answer is: BNA

376.

Water pollution of a river is measured by

(a)Amount of chlorine dissolves in water

(b)Amount of ozone dissolves in water

(c)Amount of nitrogen dissolves in water

(d)Amount of oxygen dissolves in water

Comment

Answer is: DNA

377.

Which of the following form of energy do not have the problem of pollution?

(a)Coal

(b)Atom

(c)Petrol

(d)Sun

Comment

Answer is: DNA

378.

Which if the following produce maximum sound pollution?

(a)Top music

(b)Heavy truck

(c)Jet flight

(d)None of these

Comment

Answer is: CNA

379.

Which gas is responsible for global warming?

(a)O₂

(b)O₂ and CO₂

(c)CO₂ and CH₄

(d)CH₄

Comment

Answer is: CNA

380.

Ozone layer present in our atmosphere absorb

(a)Cosmic rays

(b)Infra-red rays

(c)Ultraviolet rays

(d)All rays

Comment

Answer is: CNA

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Biology - Questions and AnswersPage 38

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