Practicing Success

Target Exam

CUET

Subject

Biology

Chapter

Environmental Issues

Question:

Match the Column I with Column II .

Column I (Greenhouse gas)
Column II (Contribution)
a. CH4 1. 60%
b. CO2 2. 20%
c. N2O 3. 14%
d. CFCs 4. 6%

 

Options:

a- 2 ,b- 1,c - 3, d- 4

a- 3 ,b- 1,c - 4, d-2

a- 2 ,b- 1,c - 4, d- 3

a- 1 ,b- 2,c - 4, d- 3

Correct Answer:

a- 2 ,b- 1,c - 4, d- 3

Explanation:

The greenhouse effect is a naturally occurring phenomenon that is responsible for heating of Earth’s surface and atmosphere. 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.