1.

State whether the following statements are true or false. Correct the false statements.(1) Bleaching powder is used in preparation of chloroform which is used as an anaesthetic. (2) On addition of universal indicator the colour of table salt changes to pink. (3) Borax is Na2B4O7.9H2O. (4) Boron -10 is used to cure bone cancer.(5) Clinical deo contains 20 to 25% of aluminium.

Answer»

(1) True 

(2) False. On addition of universal indicator the colour of table salt changes to green.

(3) False. Borax is Na2B4O7.9H2O 

(4) False. Boron – 10 is used in treatment of brain tumour. 

(5) True



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