COMEDK · Chemistry · 22. p Block Elements (Group 15, 16, 17 & 18)
Solid \(A\) reacts with strong \(\mathrm{NaOH}(a q)\) liberating a foul smelling gas \(B\) which spontaneously burn in air giving smoky rings. \(A\) and \(B\) are respectively.
- A \(p_{\text {red }}\) and \(\mathrm{PH}_{3}\)
- B \(p_{\text {White }}\) and \(\mathrm{PH}_{3}\)
- C \(\mathrm{S}\) and \(\mathrm{H}_{2} \mathrm{~S}\)
- D \(p_{\text {white }}\) and \(\mathrm{H}_{2} \mathrm{~S}\)
Answer & Solution
Correct Answer
(B) \(p_{\text {White }}\) and \(\mathrm{PH}_{3}\)
Step-by-step Solution
Detailed explanation
Phosphine has unpleasant odour like that of garlic or rotten fish. It burns in air to give clouds of \(\mathrm{P}_{4} \mathrm{O}_{10}\) which act as smoke screens.
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