MCQ
The van't Hoff factor for a solute which does not dissociate or associate in solution is:
- A0
- B2
- C3
- D1
Explanation:
The Van't Hoff factor for a solute which does not dissociate or associate in solution is 1 as it is non-electrolyte.
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Compound $(C)$ can show geometrical isomerism. Product $(E)$ of the reaction will be

Assertion $(A)$ : $\mathrm{PH}_3$ has lower boiling point than $\mathrm{NH}_3$.
Reason $(R)$ : In liquid state $\mathrm{NH}_3$ molecules are associated through vander waal's forces, but $\mathrm{PH}_3$ molecules are associated through hydrogen bonding. In the light of the above statements, choose the most appropriate answer from the options given below: