Which of the following pair of compounds cannot demonstrate law of multiple proportion?

Which of the following pair of compounds cannot demonstrate law of multiple proportion?
  1. $\mathrm{NO}, \mathrm{NO}_2$
  2. $\mathrm{CO}, \mathrm{CO}_2$
  3. $\mathrm{H}_2 \mathrm{O}, \mathrm{H}_2 \mathrm{O}_2$
  4. $\quad \mathrm{Na}_2 \mathrm{~S}, \mathrm{NaF}$

Solution

Law of multiple proportions is applicable when two or more elements combine in more than one form.

Asked in: MHT CET 2024 (11 May Shift 1)

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