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Sodium hydroxide can be prepared by the following methods; I and II.

(a) Name one precaution that needs to be taken in method I.
(b) Give the name of process A.
(c) Give one use of sodium hydroxide.

Answer Text:
(a) - A small piece of sodium should be reacted with water to avoid an explosive reaction.
(b)- Electrolysis.
(c) - Used in the manufacture of soap.