question_answer

  In one of the industrial processes used for the manufacture of sodium hydroxide, a gas X is formed as by product. The gas X reacts with lime water to give a compound Y which is used as a bleaching agent in chemical industry. Identify X and Y by giving the chemical equation of the reactions involved.  

Answer:

                  (a) Hydrogen gas is evolved when Zn metal reacts with dilute acids.                                             (1) (b) The reaction involved is (1) Test for  gas It burns with a pop sound, when passed through soap solution and a burning splinter is brought near the soap bubble.                                                               (1)