General Awareness Questions

Q.  Depletion of ozone layer is caused by

a. CFC's
b. Carbon tetra-chloride (CCl4)
c. HCFC's
d. All of the above

ANSWER: See Answer
Ozone layer depletion is one of the most serious problems faced by our planet earth. Substances that Deplete the Ozone Layer (ODS) emission are responsible for ultraviolet radiations from the sun break them to release chlorine (from CFCs) and bromine (from methyl bromide and halons).


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