Question

Chlorofluorocarbons are responsible for
a. Acid rain
b. Ozone layer
c. Global warming
d. Thermal inversion

Answer 1

The Chlorofluorocarbons (CFCs) are the compound made by the mixture of chlorine, fluorine, and carbons. As we know already, these compounds are the anthropogenetic complexes that have been freed into the atmosphere. Since the 1930s, this compound has been used in various products. The various applications include air-conditioning, refrigeration, blowing agents in foams, insulations and packing materials, propellants in aerosol cans, and as solvents.

Complete answer:

Option B:
We can say that for ozone depletion, Chlorofluorocarbons are responsible. Due to the release of the CFCs into the layer of troposphere, CFCs go to the layer of the stratosphere where they are broken down by UV contaminations discharging the gas of chlorine. We know the chlorine breaks the ${O_3}$​ into ${O_2}$​ in presence of sunlight chlorine.

Due to the presence of Chlorofluorocarbons, the ozone layer gets damaged and gets a decrease of 67 % every year. This has been led to the higher levels of UV radiation reaching earth which may cause eye cataracts, skin cancer, etc.

Option C:
We can say that global warming is caused by the increased absorptions of greenhouse vapors in the composition of the atmosphere, chiefly from human happenings such as burning fossil fuels, deforestation, and farming.

Option A:
We can state that the acid rain is produced by a chemical reaction that commences when compounds like sulfur dioxide and nitrogen oxides are unconfined into the atmosphere.

Option D:
A natural phenomenon that includes a change in the standard propensity of the air in order to cool down with altitude is called the thermal inversion.

Hence, the correct answer is option (B).

Note: The element ozone is initiated in high proportions in the layer of the stratosphere of the earth's surface. It is normally found in the form of an ozone blanket or commonly known as the ozone layer. The vital function of ozone is to fascinate the ultraviolet radiation from the sun before it reaches the ground. Thus, we can say that Ozone is hence defensive towards the planet earth from the sun’s harmful effect.