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Classify each of the following reactions...

Classify each of the following reactions.

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The correct Answer is:
C
(i)
(ii) On heating, `Ca(OH)_(2)` is decomposed into CaO and `H_(2)O`.
(iii) Precipitate of CuS is formed.
(iv) Acid `(H_(2)SO_(3))` neutralises base (KOH) forming, salt `(K_(2)SO_(3))` and water.
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