1.

(a) Name a sodium compound used for softening hard water. (b) Which compound of calcium is used for disinfecting drinking water supply? (c) Name a metal compound which has detergent properties (cleansing properties). (d) Name one compound of calcium which is used for removing the colour of a coloured cloth. (e) State a peculiar (or remarkable) property of plaster of Paris. (f) Name the substance obtained by the action of chlorine on solid (dry) slaked lime.

Answer»

(a) Name a sodium compound used for softening hard water.

(b) Which compound of calcium is used for disinfecting drinking water supply?

(c) Name a metal compound which has detergent properties (cleansing properties).

(d) Name one compound of calcium which is used for removing the colour of a coloured cloth.

(e) State a peculiar (or remarkable) property of plaster of Paris.

(f) Name the substance obtained by the action of chlorine on solid (dry) slaked lime.



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