Question

Read the following statements and select the correct option.
Statement $1$ : Chlorofluorocarbons deplete ozone.
Statement $2$ : Chlorofluorocarbons contain chlorine,bromine and fluorine.

• A. Both statements $1$ and $2$ are true and statement $2$ is the correct explanation of statement $1$
• B. Both statements $1$ and $2$ are true but statement $2$ is not correct explanation of statement $1$
• C. Statement $1$ is true and statement $2$ is false
• D. Both statements $1$ and $2$ are false

Answer 1

The correct option is B Both statements $1$ and $2$ are true but statement $2$ is not correct explanation of statement $1$

Chlorofluorocarbons (CFCs) are the primary cause of ozone depletion. CFCs in presence of UV rays release chlorine atoms which react with ozone and break it apart, thus, causing its degradation. Hence, statement 1 is correct.

Chlorofluorocarbons contain carbon, chlorine, fluorine and bromine. Hence, statement 2 is also correct but it is not the correct explanation for statement 1.

So, the correct answer is 'Both statements 11 and 22 are true but statement 22 is not correct explanation of statement 1'.'.