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
