An inorganic salt (A) is decomposed at about 523 K to give products (B) and (C). compound (C) is a liquid at room temperature and is neutral to litmus paper while oxide (B) on burning with white phosphorous, given a dehydrating agent (D). compounds (A), (B), (C) and (D) will be identified as :

N H_{4} N O_{3}, N_{2} O, H_{2} O, P_{2} O_{5}

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N H_{4} N O_{2}, N_{2} O, H_{2} O, P_{2} O_{5}

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C a C O_{3}, C a O, H_{2} O, C a C l_{2}

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C a C O_{3}, C a O, H_{2} O, C a O H_{2}

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Solution

The correct option is A $N H_{4} N O_{3}, N_{2} O, H_{2} O, P_{2} O_{5}$
Option (A) is correct.

Compounds (A), (B), (C) and (D) will be identified as $N H_{4} N O_{3}, N_{2} O, H_{2} O, P_{2} O_{5}$ respectively.
An inorganic salt (A) is decomposed at about 523 K to give products (B) and (C).
$N H_{4} N O_{3} ⟶ N_{2} O + 2 H_{2} O$
$H_{2} O$ is a liquid at room temperature and is neutral to litmus paper.
Oxide (B) on burning with white phosphorous, gives a dehydrating agent (D).
$10 N_{2} O + P_{4} ⟶ 2 P_{2} O_{5} + 10 N_{2}$

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