Answer:
(a) He suggested her not to
store curd in metal container as lactic acid present in curd forms salts with
metal which taste bitter. (2)
(b) Malini has a good aesthetic
sense, generous, polite and courteous.
(c) The guest is intelligent,
practical, sharing and convincing.
Or
(a) Nisha is caring,
spontaneous, cautious and helpful.
(b) In lab, one should wear lab
coat and goggles. No chemical should be touched or tasted. Apparatus and
materials should be handled with most care.
(c) Some strong acids are etc.
(1)
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