Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Activated charcoal adsorbs $$SO_2$$ more efficiently than $$CH_4$$.
Reason R: Gases with lower critical temperatures are readily adsorbed by activated charcoal.
In the light of the above statements, choose the correct answer from the options given below.

We need to evaluate the assertion that activated charcoal adsorbs $$SO_2$$ more efficiently than $$CH_4$$, and the reason that gases with lower critical temperatures are readily adsorbed by activated charcoal.

The ease of adsorption of a gas depends on how easily it can be liquefied, and gases with higher critical temperatures are more easily liquefiable and hence are more readily adsorbed. The critical temperature of $$SO_2$$ is $$430 \text{ K}$$ (high, easily liquefiable), while that of $$CH_4$$ is $$190 \text{ K}$$ (low, not easily liquefiable). Since $$SO_2$$ has a higher critical temperature, it is adsorbed more efficiently than $$CH_4$$, making the assertion correct.

By contrast, the reason states that gases with lower critical temperatures are readily adsorbed, which is the opposite of the correct principle. Gases with higher critical temperatures are more readily adsorbed because they are more easily liquefiable, so the reason is incorrect.

The correct answer is Option C: A is correct but R is not correct.