SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following are pure substances?
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elements
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colloids
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heterogeneous mixture
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solutions
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Explanation:
Detailed explanation-1: -Ice, Iron, Hydrochloric acid, Calcium oxide, and Mercury are pure substances because their chemical compositions are the same throughout.
Detailed explanation-2: -A pure substance, basically composed of two or more elements and chemically combined in a fixed proportion is called a compound. Therefore, water is a compound. It has two elements, hydrogen and oxygen, combined in a fixed ratio.
Detailed explanation-3: -Hydrogen gas. Gold metal. Sugar (sucrose) Baking soda (sodium bicarbonate) Ammonia. Diamond. Copper wire. Silicon chip. More items •30-Aug-2018
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