Which of the following materials fall in the category
Question.
Which of the following materials fall in the category of a “pure substance” ?
(a) Ice
(b) Milk
(c) Iron
(d) Hydrochloric acid
(e) Calcium oxide
(f) Mercury
(g) Bric
(h) Wood
(i) Air.

Solution:
Ice, iron, hydrochloric acid, calcium oxide, and mercury are pure substances.
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