Question

7.
pure water?
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
Mercury
Brick
(h) Wood
(i)
Air
11​

Answer 1

Answer:

ice is ur answer

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Explanation:

may it hlp u dear

Answer 2

Ice, iron, hydrochloric acid, calcium oxide, mercury are pure substances as they have definite composition. Milk is a colloid and acts as a heterogeneous mixture hence is not a pure substance. Brick and air are made up of more than one substance hence they also don't fall in the category of pure substances.