Greenhouse gases are responsible for global warming. They enter our atmosphere either naturally or anthropogenically. Match column I (containing greenhouse gases) with column II (containing their source) and select the correct option from the given codes.

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Solution

A. Cement manufacture contributes greenhouse gases through the production of carbon dioxide when calcium carbonate is thermally decomposed, producing lime and carbon dioxide.

B. Methane is produced in the guts of ruminant livestock as a result of methanogenic microorganisms (belonging to the Archaea).

C. Air conditioners contained a liquid refrigerant composed of chlorofluorocarbons (CFCs), which were later found to emit greenhouse gases.

D. Nitrous oxide is a by-product of fuel combustion in mobile and stationary sources. When any fossil fuel is burnt, part of the nitrogen that is in the fuel and surrounding air gets oxidized creating nitrous oxide emissions.

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Similar questions

Match the global warming activities given under column I with respective greenhouse gases produced under column II and select the right answer.

Q. Match column I with column II and select the correct option.

Column I (Greenhouse gases)	Column II (Relative contribution to global warming)
1. $C O_{2}$	A. 20%
2. $C H_{4}$	B. 60%
3. $N_{2} O$	C. 14%
4. $C F C s$	D. 6%

Q. Select the correct statements about greenhouse gases:

A. Carbon dioxide is the only gas in the atmosphere which causes global warming.
B. The greenhouse gases trap heat and do not allow heat to escape into outer space.
C. Water vapours do not contribute to the greenhouse effect.
D. The presence of excessive greenhouse gases in the atmosphere is responsible for global warming.

Q. Read the following statements and select the correct statements about greenhouse gases:
a) Carbon dioxide is the only gas in the atmosphere which causes global warming.
b) The greenhouse gases trap heat and do not allow heat to escape into outer space.
c) Water vapors do not contribute to greenhouse effect.
d) The presence of excessive greenhouse gases in the atmosphere is responsible for global warming.

Match the greenhouse gases listed in column - II with their respective sources (activities from which they get released) in column - I.
$\begin{matrix} C o l u m n - I A c t i v i t i e s & C o l u m n - I I G r e e n h o u s e g a s e s A & C o m b u s t i o n o f f o s s i l f u e l & p & C a r b o n d i o x i d e B & S w a m p a n d r i c e f i e l d s & q & O z o n e C & R e f r i g e r a t i o n & r & N i t r o u s o x i d e D & B u r n i n g o f b i o m a s s & s & M e t h a n e t & C F C_{s} \end{matrix}$

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