18. Answer briefly VII

3 m.

Mention the uses for the following compounds.

Compunds	Uses
a. Baking soda	Softening of hard water Preparation of baking powder Preparation of cakes and bread Fire extinguisher
b. Bleaching powder	Preservative agent for meat and fish Sterilisation of drinking water Cleaning agent in soap Disinfectant Bleaching agent
c. Quick lime	Whitewashing of walls For manufacturing glass For preparing chalk pieces For manufacturing cement

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