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Question

Freon gas causing stratosphere O3 depletion is mainly released from

A
Refrigerators
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B
Automobiles
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C
Thermal power plants
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D
Steel industry
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Solution

The correct option is B Refrigerators
Freon gas is a type of chlorofluorocarbon (CFC) i.e., it contains carbon and hydrogen along with fluorine and chlorine. It is used as a refrigerant. CFCs release chlorine atoms in the atmosphere that react with ozone and cause its depletion. Hence, Freon causes ozone depletion and it is released from refrigerators.
So, the correct answer is 'Refrigerators'.

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