Science
Which of the following materials fall into the category of 'pure substance'?
(a) Ice
(b) Milk
(c) Iron
(d) Hydrochloric acid
(e) Calcium oxide
(f) Mercury
(g) Brick
(e) Wood
(f) Air
Matter
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Answer
Following substances from the above-mentioned list are pure substances:
Ice
Iron
Hydrochloric acid
Calcium oxide
Mercury
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