The boiling point of a liquid____by the addition of impurities to it.

Decreases

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Increases

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Remains same

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Increases or decreases

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Solution

The correct option is B
Increases

If a little common salt is added to the water, it boils at a temperature higher than 100 degree Celsius. This is why on the addition of salt water provides sufficient heat energy to its contents before boiling, so the cooking becomes easier. Generally, impurities increase the boiling point of a liquid.

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Q. The boiling point of liquid increases by addition of impurities to it. True or False?

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Question 37
Explain why on addition of 1 mole of NaCl to 1L of water, the boiling point of water increases, while addition of 1 mole of methyl alcohol to 1 L of water decreases its boiling point.

Q. Explain why on addition of 1 mol of NaCl to 1 litre of water, the boiling point of water increases, while addition of 1 mol of methyl alcohol to one litre of water decreases its boiling point.

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