Question

Which of the following is not a solution? (1) Smoke (2) Air (3) Salt (4) A gold ring

Answer 1

Answer:

Air is the right answer

Explanation:

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Answer 2

(4) A gold ring is not a solution

Explanation:

1.Air is a mixture of different gases like nitrogen, carbon dioxide, and oxygen. Out of all these gases, nitrogen will be present in high amounts. Thus, other gases were dissolved in nitrogen which leads to the fact that air is a solution.

2.Smoke is the colloidal solution in which the solid particles are dispersed in the gas which is known as dispersed medium.

3.A gold ring is a mixture of gold, copper, and traces of zinc. Thus, the gold ring is a mixture but not a solution.

4.when Salt is the mix with water forms salt water(  sodium chloride) which is known as salt dissolved in water. Thus, saltwater is considered a true solution.