Question

Which of the following is a mixture?


1.Potassium carbonate
2.Potassium carbonate solution
3.Potassium
4.Sodium

Answer 1

Answer:

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Answer 2

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Option 1. Potassium carbonate ($K_{2}CO_{3})$is a example of mixture.

This is mixture because this is a mixture of Potassium (K), Carbon (C) and Oxygen (O). The rest are not considered as a mixture because —

•Potassium Carbonate Solution is a solution. A solution is always a mixture, 'cause it contains more than two elements. A solution is always a mixture. Even water is also a mixture of impurities.

•Potassium and Sodium is a element. A element contains only one kind of atom. So it is not considered as mixture.

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• Pure substabce
• Impure substance

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• Elements — Its the substance which contains one kind of atom

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• Compound — The substance which contains molecules of two compounds
• Mixtue — The substance which contains molecules of more than two substance