Answers

2016-04-18T21:48:44+05:30
The following materials fall in the category of a "pure substance" :-

(a) Ice.
(c) Iron.
(d) Hydrochloric acid.
(e) Calcium oxide.
(f) Mercury.
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2016-04-18T21:49:20+05:30
Pure substances refer to those substances which contain only the same kind of particles.

So, the pure substances from the given list are:

(a) Ice
(c) Iron
(d) Hydrochloric Acid
(e) Calcium Oxide
(f) Mercury
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