which of following materials fall in the category of a pure substance
ice
milk
iron
hydrochloric acid
air
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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 into pure substances.
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1
Answer:
Out of the given nine compounds, the following are pure substances. 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.
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