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Assertion (A): The increasing pressure o...

Assertion (A): The increasing pressure on water decreases its freezing point.
Reason (R ):The density of water is maximum at `273 K`.

A

If both assertion and reason are true, and reason is the true explanation of the assertion.

B

If both assertion and reason are true, but reason is not the true explanation of the assertion.

C

If assertion is true, but reason is false.

D

If both assertion and reason are false.

Text Solution

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Correct R. Density of water is maximum at `277K(4^(@)C)`.
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Each question contains STATEMENT-I(Assertion) and STATEMENT-2(Reason).the statement carefully and mark the correct answer accoring to the instrution given below: STATEMENT - 1 : Increasing pessure on pure water decrease its freezing point. STATEMENT - 2 : Density of water is maximum at 273 K.

Assertion (A) When NaCl is added to water a depression in freezing point is observed. Reason (R ) The lowering of vapour pressure of a solution causes depression in the freezing point.

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The melting of ice in water decreases with increase in pressure.

Soluble impurities present in water increase the freezing point of water. True of False?

The freezing point of water decreases with a decrease in pressure . True or False

Assertion : The melting point of ice decreases with increase of pressure Reason : Ice contract on melting.

For the following Assertion and Reason the correct option is: Assertion :The pH of water increases with increase in temperature Reason : The dissociation of water into H^(+) and OH^(-) is an exothermic reaction

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