Greenhouse Effect

Q.

What is the most abundant greenhouse gas in our atmosphere?

Q. Arrange $CFC,C{H}_4,N_{2}O$ and $C{O}_2$ in decreasing order according to their contribution in global warming.

1. $C{O}_2>N_{2}O>CFC>C{H}_4$
2. $CFC>C{O}_2>C{H}_4>N_{2}O$
3. $C{H}_4>CFC>N_{2}O>C{O}_2$
4. $C{O}_2>C{H}_4>CFC>N_{2}O$

Q. If the current trend of global warming continues, would you expect the distributional range of some species to be affected?

Q.

Which of the following protocols aimed to reduce the emission of chlorofluorocarbons into the atmosphere?

1. Geneva Protocol

2. Montreal Protocol

3. Kyoto Protocol

4. Gothenburg Protocol

Q.

If CO₂ is absent in the atmosphere of earth then

1. Temperature will decrease

2. Temperature will increase

3. Plants will flourish well

4. No effect

Q.

What is a greenhouse?

Q.

How carbon dioxide is added to the atmosphere?

Q. Name any two greenhouse gases.

Q. Read the following statements (A - C) related to the greenhouse effect and select the correct statements.

A. Greenhouse gases absorb the long wave radiation.
B. Earth’s surface re-emits heat in the form of infrared radiation.
C. Clouds and gases reflect about one-third of the incoming solar radiation.

1. A and C
2. A and B
3. B only
4. C only

Q. Read the following statements and select the incorrect statement related to global warming

1. Rise in temperature of Earth due to human activities such as burning of fossil fuels leads to global warming
2. It occurs due to an increase in the level of greenhouse gases in Earth's atmosphere
3. It can result in odd climate changes such as droughts, floods, forest fires and cyclones
4. It leads to an increased formation of polar ice caps

Q. Assertion (A): The greenhouse effect is a naturally occurring phenomenon
Reason (R): Greenhouse gases absorb shortwave (infrared) radiation from the earth.

1. Assertion and reason are true, and the reason is the correct explanation of the assertion
2. Assertion and reason are true, but the reason is not the correct explanation of the assertion
3. Assertion is a true statement but the reason is false
4. Assertion and reason are false statements

Q. Which one of the following is the correct percentage of the two (out of the total of 4) greenhouse gases that contribute to the total global warming?

1. $N_{2}O-6\%,C{O}_2-86\%$
2. $Methane-20\%,N_{2}O-18\%$
3. $Methane-20\%,N_{2}O-18\%$
4. $CFCs-14\%,Methane-20\%$

Q.

What is the greenhouse effect? Why it is named so?

Q.

Identify the correctly matched pair among the following.

1. Basal convention Biodiversity conservation

2. Ramsar convention Ground water convention pollution

3. Kyoto protocol Climatic change

4. Montreal protocol Global warming

Q. Match column A with column B and choose the correct option.

Column A (AQI Value)	Column B (Inference)
1. 15	a. Can cause serious illness
2. 130	b. The quality of air is good
3. 310	c. Can cause respiratory problems
4. 456	d. Can cause discomfort to sensitive people

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

Q. Which one is correct percentage of greenhouse gases?

1. $C{O}_2-4)\%,CFCs-30\%$
2. $N_{2}O-6\%,C{O}_2-86\%$
3. $CFCs-14\%,$Methane $-20\%$
4. Methane $-20\%,N_{2}O-18\%$

Q. The carbon dioxide content in Earth's atmosphere is

1. 
2. 
3. 
4. 

Q.

Discuss briefly the following

(a) Greenhouse gases

(b) Catalytic converter

(c) Ultraviolet - B

Q. In the breakdown of the ozone layer, ozone directly reacts with [1]
a) ultraviolet light
b) chlorine atoms
c) oxygen atoms
d) CFC molecules

Q. Regarding the assertion and reason, choose the correct option.
Assertion [A]: Greenhouse effect is due to a thick layer of CO₂.
Reason [R]: The glass panels of a greenhouse allow the sunlight to filter through but prevent heat from being re-radiated into outer space.

1. Both assertion and reason are true and the reason is the correct explanation for assertion.
2. Both reason and assertion are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but the reason is false.
4. Both the reason and assertion are false.

Q. Identify the correctly matched pair.

1. Montreal protocol—Global warming
2. Basel convention—Biodiversity conservation
3. Kyoto protocol—Climate change
4. Ramsar convention—Ground water pollution

Q. Explain any three remedial measures to overcome the acute air pollution in our cities. [3 Marks]

Q.

What are greenhouse gases and how do they affect the climate?

Q. To control the emission of ozone depleting substances, Montreal Protocol was signed in 1987 and it became effective in

1. 1988
2. 1989
3. 1986
4. 1985

Q. In the breakdown of the ozone layer, ozone directly reacts with

1. ultraviolet light
2. chlorine atoms
3. oxygen atoms
4. CFC molecules

Q. Without____A___, the average temperature at surface of Earth would have been -18°C rather than the present average of ______.

1. A: greenhouse effect, B: 15°C
2. A: global warming, B: 10°C
3. A: greenhouse gases, B: 20°C
4. A: global warming, B: 5°C

Q. What is the role of plants in controlling air pollution and soil erosion?

Q. Which one of the following is the correct percentage of the two (out of the total of 4) greenhouse gases that contribute to the total global warming?

1. $Methane-20\%,N_{2}O-18\%$
2. $N_{2}O-6\%,C{O}_2-86\%$
3. $Methane-20\%,N_{2}O-18\%$
4. $CFCs-14\%,Methane-20\%$

Q. Process of re-radiating heat by atmospheric dust water vapour, ozone, $C{O}_2$, etc. is known as:

1. Greenhouse effect
2. Ozone depletion effect
3. $C{O}_2$ fertilization effect
4. Radioactive effect

Q.

State one source and effect of carbon dioxide and methane in the atmosphere.