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प्रश्न
A solution of a substance ‘X’ is used for white washing.
- Name the substance ‘X’ and write its formula.
- Write the reaction of the substance ‘X’ named in (i) above with water.
उत्तर
- The substance ‘X’ is calcium oxide. Its chemical formula is CaO.
- Calcium oxide reacts with water to form calcium hydroxide. \[\ce{\underset{(X)}{CaO_{(s)}} + H2O_{(l)} -> \underset{Calcium hydroxide}{Ca(OH)2_{(aq)}}}\]
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