Alum stops bleeding in minor cuts because of coagulation




1.Alum stops bleeding in minor cuts because of
(a) solvation
(b) emulsion
(c) dialysis
(d) coagulation

Ans.(d)

2. The purity of gold is expressed in carats. The purest form of gold is
(a) 24 carats
(b) 99.6 carats
(c) 91.6 carats
(d) 22 carats

Ans.(a)

3. Which one of the following is extensively used for sterilizing water?
(a) Bleaching powder
(b) Alum
(c) Borax powder
(d) Soda powder

Ans.(a)

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