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Sodium chloride contains two elements, b...

Sodium chloride contains two elements, but it is still a pure substance. Assign reason.

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The two elements sodium and chlorine have combined with each other by chemical reaction to form sodium chloride (NaCl) which is a chemical compound. Since these elements cannot be separated from each other be any physical process, sodium chloride is a pure substance.
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DINESH PUBLICATION-IS MATTER AROUND US PURE-Very Short Answer Questions
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  17. Is colloidal solution homogeneous in nature ?

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  18. Give one example of suspension and colloidal solution.

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