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An inorganic salt (A) is decomposed at a...

An inorganic salt (A) is decomposed at about 523K to give products (B) and (C). Compound (C) is a liquid at room temperature and is neutral to litmus paper while compound (B) is used in dental surgery for anesthesia purpose. Compounds (A),(B),(C) wll be identified as-

A

`NH_(4)NO_(3),N_(2)O,H_(2)O`

B

`NH_(4)NO_(2),N_(2),H_(2)O`

C

`CaCO_(3),CaO,H_(2)O`

D

NH_(4)Cl, NH_(3),HCl`

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A
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