Which one of the following pairs of gases are the major cause of " Greenhouse effect"?

  • Option 1)

    CO_{2}   and O_{3}

  • Option 2)

    CO_{2}   and CO

  • Option 3)

    CFC_{s}   and SO_{2}

  • Option 4)

    CO_{2}  and N_{2}O

 

Answers (1)

As discussed in

Greenhouse effect -

The term ‘Greenhouse effect’ has been derived from a phenomenon that occurs in a greenhouse. The greenhouse effect is a naturally occurring phenomenon that is responsible for heating of Earth’s surface and atmosphere.

- wherein

In a greenhouse the glass panel lets the light in, but does not allow heat to escape. Therefore, the greenhouse warms up, very much like inside a car that has been parked in the sun for a few hours.

 

 As discussed in

Mechanism of green house effect -

Clouds and gases reflect about one-fourth of the incoming solar radiation, and absorb some of it but almost half of incoming solar radiation falls on Earth’s surface heating it, while a small proportion is reflected back. Earth’s surface re-emits heat in the form of infrared radiation but part of this does not escape into space as atmospheric gases (e.g., carbon dioxide, methane, etc.) absorb a major fraction of it. The molecules of these gases radiate heat energy, and a major part of which again comes to Earth’s surface, thus heating it up once again.

- wherein

This cycle is repeated many a times. The above-mentioned gases – carbon dioxide and methane – are commonly known as greenhouse gases because they are responsible for the greenhouse effect.

 

 


Option 1)

CO_{2}   and O_{3}

This solution is incorrect

Option 2)

CO_{2}   and CO

This solution is incorrect

Option 3)

CFC_{s}   and SO_{2}

This solution is incorrect

Option 4)

CO_{2}  and N_{2}O

This solution is correct

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