Question

Which of the following plays a major role in ozone depletion? a) carbon dioxide b) sulphur dioxide c) chlorofluorocarbon (CFCs) d) nitrogen dioxide

Answer 1

Answer:

c) Chloroflurocarbon (CFCs) plays a major role in Ozone depletation.

The CFCs are released from refrigerators, air coolers, foam-blowing things, reach the stratosphere by the turbulent mixture.

When these CFC reach the stratosphere, they convert or break the Ozone (O3) into plain oxygen (O2).

These Ozone layer protect us and then earth from the harmful ultraviolet rays of sun. It acts as a filter for the short wavelength of rays.

Answer 2

Explanation:

Question:-

Which of the following plays a major role in ozone depletion ?

• Carbon dioxide

• Sulphur dioxide

• Chlorofluorocarbon (CFCs)

• Nitrogen dioxide

Answer:-

The correct option will be Chlorofluorocarbon.

Reason:-

• Why not carbon dioxide is correct ?

Because carbon dioxide only traps all the heat released in the atmosphere by various sources like vehicles and factories. However, this gas doesn't play any significant role in damaging the atmosphere itself.

So, that's why it doesn't pollute the environment more than other three options.

• Why sulphur dioxide is not correct ?

Because this gas mix with rainwater or any other natural features to pollute our environment. The rain in which sulphuric acid is mixed is called acid rain. There are many side-effects of sulphur dioxide on living beings like thyroid, cancer,etc.

However,this gas doesn't do more harm if it not mixed with anything and do less harm than rest two gases.

• Why Chlorofluorocarbon is correct ?

Because this is the only gas which is contributing it's most to pollute the environment. This gas makes hole in our ozone layer which allows the sunlight (radiation) to enter the earth without any obstacles. If a gas can make a hole in our protective layer (ozone layer),then it is doing most in harming our earth.

So,this gas is highly counted in the harmful gas rather than all the other options.

• Why nitrogen dioxide is not correct ?

Because it does almost the same work (absorbing heat of the atmosphere ) as carbon dioxide,so this gas is also not counted as most polluting gas in the four options.

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