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A solution of a substance ‘X’ is used for whitewashing.
(i) Name the substance ‘X’ and write its formula.

(ii) Write the reaction of the substance ‘X’ named in (i) above with water.


Answer :

(i) Calcium Oxide or quick lime is the substance used for whitewashing.Hence, the substance ‘X’ is Calcium Oxide and it’s formula is \( CaO \).
(ii) \( CaO+ H_2 O → Ca(OH)_2 \)

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