MCQ on Greenhouse Effect for NEET

A greenhouse is like a glass house where we grow plants. It works because the sun’s heat stays trapped inside, making it warm and helping plants grow. The same thing happens in Earth’s atmosphere. During the day, the sun warms up Earth’s atmosphere. At night, when it cools down, the heat goes back into the atmosphere. During this process, greenhouse gases in Earth’s air capture some of the heat.

This is what keeps Earth warm enough for life to exist. But now, there are more greenhouse gases, and that’s making Earth too hot. This is causing many serious problems.

Greenhouse Effect MCQ for NEET

Ques 1. Greenhouse gases present in a very high quantity is

1. ethane

2. propane

3. carbon dioxide

4. methane

Answer: carbon dioxide

Ques 2. This statement is false about the greenhouse effect

1. increased emission of greenhouse gases is a natural process

2. the greenhouse effect is a natural process that maintains the earth’s temperature

3. life on the earth is possible due to the greenhouse effect

4. increased emission of greenhouse gases in the atmosphere increases earth’s temperature

Answer: increased emission of greenhouse gases is a natural process

Ques 3. This is the most potent greenhouse gas in terms of efficiency

1. N₂O

2. C₂O

3. CFC

4. CH₄

Answer: CFC

Ques 4. These are features of higher energy level and shorter wavelengths

1. infrared radiation

2. beta radiation

3. alpha radiation

4. ultraviolet radiation

Answer: ultraviolet radiation

Ques 5. The one which is not considered as naturally occurring greenhouse gas is

1. CFCs

2. nitrous oxid

3. carbon dioxide

4. methanee

Answer: CFCs

Ques 6. The relative contribution of various greenhouse gases to total global warming will not be

1. Carbon dioxide – 60%

2. N₂O – 12%

3. CFCs – 14%

4. Methane – 20%

Answer: N₂O – 12%

Ques 7. The wavelength of infrared radiations is

1. infinite

2. longer

3. shorter

4. zero

Answer: longer

Ques 8. Gas molecules absorbing thermal infrared radiation and present in large quantity to change the climate system is known as

1. greenhouse gases

2. beta radiations

3. alpha radiations

4. ozone gases

Answer: greenhouse gases

Ques 9. The normal greenhouse effect is essential for sustenance of life on Earth as it helps in maintaining the average temperature of the earth to

1. 15 ℃

2. – 18 ℃

3. 33 ℃

4. 50 ℃

Answer: 15 ℃

Ques 10. Burning of fossil fuels

1. decreases greenhouse gases

2. increases greenhouse gases

3. increased oxygen level

4. increased ethane level

Answer: increases greenhouse gases