There were many gas molecules $N H_{3}, C O, C H_{4}$ and $S O_{2}$ in a group once. They were discussing about who would be the better adsorbate on charcoal. So, they decided to have race among themselves to prove it as to who would be adsorbed more in the same time.
Who do you think won?

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N H_{3}

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C H_{4}

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S O_{2}

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Solution

The correct option is D $S O_{2}$
You might have realized by now that the gas with the highest critical temperature is the one which would have the ability to adsorb most readily. This means that for 1 gram of charcoal, $S O_{2}$ would cover most surface area of the charcoal in the same amount of time.
So, $S O_{2}$ would be the winner of this race since it has the highest critical temperature among the gases given.

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N H_{3}, C O, C H_{4}

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Vijayasama and the narrator both refer many times to "they." Who do you think "they" are?

Discuss

(a) Who is the narrator? What is the narrator’s age, and position in the family?

(b) What do you think happened to the mother?

(d) Who came to look after the children?

(e) Why did the grandmother decide they would go away?

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