Q24 · CSIR-NET Chemistry, December 2017

Paper: CSIR-NET December 2017 · Subject: Inorganic Chemistry · Chapter: Analytical Chemistry · Topic: Analytical Chemistry – General · Marks: 2 · Difficulty: Medium

To determine the bond parameters at 25°C, electron diffraction is generally unsuitable for both
(a)$\mathrm{O}_{3}$ and $\mathrm{NO}_{2}$
(b)Sulfur and dry ice
(c)$\mathrm{NO}_{2}$ and sulphur
(d)$\mathrm{O}_{3}$ and dry ice
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
Gas-phase electron diffraction needs a vapour; at 25 °C sulfur and dry ice (solid CO₂) are solids, whereas O₃ and NO₂ are gases.

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