Question

Which of the following materials fall in the category of pure substance? (a) CaO,CO2 and Nacl ( b) Brick,mercury and wood (c) lce ,milk and iron
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Answer 1

Answer:

(a) CaO,CO2 and NaCl are pure substances....

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Answer 2

Answer:

OPTION a-

CaO, CO2 and NaCl

Explanation:

pure substance is an element or a compound and hence calcium oxide, carbon dioxide and sodium chloride which are compounds fall into the category of pure substance