Which one of the following is not true at room temperature and pressure

Question

Which one of the following is not true at room temperature and pressure, $\mathrm{P}_4 \mathrm{O}_{10}$ is a white solid, $\mathrm{SO}_2$ is a coloureless gas, $\mathrm{SO}_3$ is a colourless gas, $\mathrm{NO}_2$ is a brown gas

MARKS App · Accepted Answer

Hints: $\mathrm{SO}_3$ is colorless, crystalline transparent solid at room temperature.

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