Which one of the following substance is a mixture?

Which one of the following substances is a mixture?A. WaterB. CopperC. SeawaterD. Salt

Answer

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Hint: The combination of different elements or atoms to form a chemical is called mixture. If the compound contains repeatedly the same atom throughout the chemical then it is not called a mixture.

Complete answer:
- In the question it is asked to find the mixture among the given options.
- We have to find the chemical which is going to have the same properties as a mixture should contain.
- Coming to the given options, option A, Water. Water is a chemical having a molecular formula of ${{H}_{2}}O$.
- Throughout the water the composition is not going to change and we cannot observe any other thing other than the water.
- Therefore water is not a mixture.
- Coming to option B, Copper. Copper is a pure metal that has high conductance due to the presence of the free electrons.
- We know that copper is pure metal and does not contain any other chemicals mixed with it.
- Therefore the copper is not a mixture.
- Coming to option C, sea water. Yes seawater is a mixture due to the presence of a lot different composition of the salts in various concentrations in water.
- Therefore sea water is a best example for mixture.
- Coming to option D, salt. Salt is also not a mixture because it contains the same cation and same anion throughout the chemical.

Therefore the correct option is C, sea water.

Note:
The mixture will have some properties and those properties are due to the resultant of the properties of all the atoms or ions which are present in it. The food that we eat every day is a best example for mixture.

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Which one of the following sub...

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Which of the following substances is a mixture?

• A. Sulphur powder
• B. Bronze
• C. Distilled water
• D. Ethanol

Correct Answer: Option B

Explanation

Bronze is a mixture of copper and tin. Water is a compound of the elements hydrogen and oxygen.

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Class 11

Physics

Heat & Thermodynamics

Thermal properties of Matter

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Sea water is a mixture. It contains water and dissolved minerals. Water and salt are compounds. Copper is element.

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