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Environmental Issues

Question
CBSEENBI12047126
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The true statement about 'green-house effect' is that it is caused by :

  • CO2 only

  • SO2 only

  • CO2 and SO2

  • CO2, CFC, CH4 and NO2 gases

Solution

D.

CO2, CFC, CH4 and NO2 gases

Greenhouse effect is a natural process that warms the Earth's surface. It can also be defined as heating of biosphere caused by incoming solar radiations and inhibiting the outgoing radiations. The warm air inside green house causes heating. It is caused by the gases like CO2, CFCs, CH4 and NO2.

Some More Questions From Environmental Issues Chapter

WHO’s recommendations about the industrial noise limit is of :

Which of the atmospheric layer contains ozone layer ?

The amount of dissolved oxygen required by the microorganisms to degrade the organic wastes present in water is called ?

The cause of acid rain is :

Which one of the following causes ozone depletion ?

What disease is caused due to consumption of fishes captured from water contaminated with mercury ?

Which one of the following is not a green-house gas ?

Which gas contributes the maximum in global warming ?

Fill in the blanks with suitable words :

1. Increase in concentration of soluble salts in the soil is called.........

2. Aforestation can check the advancement of......... .

3. DDT is a serious pollutant as it is a.........pollutant and undergoes......... .

4 .........plant has become a troublesome weed in agricultural fields.

5 .........are major aerosol pollutant present in jet aircraft emission.

Write “True” or “False” :

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