Q2 of 34 Page 33

Name the substance which on treatment with chlorine yields bleaching powder.

Bleaching powder is produced by the action of chlorine on dry slaked lime.


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4

Under what soil condition do you think a farmer would treat the soil of his fields with quicklime (calcium oxide) or slaked lime (calcium hydroxide) or chalk (calcium carbonate)?

 1

What is the common name of the compound CaOCl2?

 3

Name the sodium compound which is used for softening hard water.

 4

What will happen if a solution of sodium hydrogen carbonate is heated? Give the equation of the reaction involved.