Q82 / 180 · NEET 2025 · Chemistry
Identify the correct orders against the property mentioned
(A) $\mathrm{H}_2 \mathrm{O}\gt\mathrm{NH}_3\gt\mathrm{CHCl}_3$ - dipole moment
(B) $\mathrm{XeF}_4\gt\mathrm{XeO}_3\gt\mathrm{XeF}_2-$ number of lone pairs on central atom
(C) $\mathrm{O}-\mathrm{H}\gt\mathrm{C}-\mathrm{H}\gt\mathrm{N}-\mathrm{O}-$ bond length
(D) $\mathrm{N}_2\gt\mathrm{O}_2\gt\mathrm{H}_2$ - bond enthalpy
Choose the correct answer from the options given below :
- Correct answerAA, D only
- BB, D only
- CA, C only
- DB, C only
Solution
(A) $\mathrm{H}_2 \mathrm{O}\gt\mathrm{NH}_3\gt\mathrm{CHCl}_3$ - correct
(C) $\mathrm{O}-\mathrm{H}\gt\mathrm{C}-\mathrm{H}\gt\mathrm{N}-\mathrm{O}$ - Incorrect According to size of element. (D) $\mathrm{N}_2\gt\mathrm{O}_2\gt\mathrm{H}_2$ - correct $\mathrm{N} \equiv \mathrm{N} \quad \mathrm{O}=\mathrm{O} \quad \mathrm{H}-\mathrm{H}$
(C) $\mathrm{O}-\mathrm{H}\gt\mathrm{C}-\mathrm{H}\gt\mathrm{N}-\mathrm{O}$ - Incorrect According to size of element. (D) $\mathrm{N}_2\gt\mathrm{O}_2\gt\mathrm{H}_2$ - correct $\mathrm{N} \equiv \mathrm{N} \quad \mathrm{O}=\mathrm{O} \quad \mathrm{H}-\mathrm{H}$
Hence, the correct answer is option: 'A'.