Question

which of the following materials fall in the category of a pure substances ​

Answer 1

Answer:

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.

Explanation:

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Answer 2

Answer:

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Explanation:

Ice, iron, hydrochloric acid, calcium oxide, mercury are pure substances as they have definite composition.