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Which of the following material fall in the category of a pure substance ? |
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Answer» All elements and compounds are pure substance Pure substance is one that does not have any other substance or impurity present in it and cannot be separated into other kinds of matter by physical processes. It can be an element or a compound.\tOut of the given nine compounds following are the pure substances\tIce, iron, hydrochloric acid, calcium oxide, mercury\xa0are pure substances as they have definite composition.\tMilk is a colloid and acts as a heterogeneous mixture hence is not a pure substance.\tBrick and air are made up of more than one substance hence they also don’t fall in the category of pure substances. |
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