Question

a gas X reacts with lime water and forms a compound Y which is used as bleaching agent in the chemical industry.identify X and Y.give chemical equation of the reaction .

Answer 1

the gas is chlorine {Cl} thet reacts with lime water to forms calcium oxychloride {CaOCl2} which is used as bleaching agent in the chemical industry

so x= chlorine
y=calcium oxychloride

the reaction involved as:-
Ca{oh}2 + cl2 ======CaoCl2+ h2o