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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 the reason is the correct explanation of the assertion.

B

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

C

If assertion is true but reason is false.

D

If the assertion and reason both are false.

Text Solution

Verified by Experts

The correct Answer is:
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.

Assertion: Ice is lighter than water and floats on it. Reason : The density of water is maximum at 4^(@) C and lower at greater and lower temperatures.

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.

ERRORLESS -SOLUTION -ORDINARY THINKING OBJECTIVE QUESTIONS (Depression of freezing point of the solvent )
  1. The molal depression constant for water is 1.86^(@)C. The freezing poi...

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  2. By dissolving 5 g substance in 50 g of water, the decrease in freezin...

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  3. If sodium sulphate is considered to be completely dissociated into cat...

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  4. Ethylene glycol is used as an antifreeze in a cold climate. Mass of et...

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  5. K(f) for water is 1.86 K kg mol^(-1). IF your automobile radiator hold...

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  6. The amount of urea to be dissolved in 500 cc of water (K(f)=1.86) to p...

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  7. What is the effect of the addition of sugar on the boiling and freezin...

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  8. In countries nearer to polar region, the roads are sprinkled with CaCl...

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  9. The freezing point of water is depressed by 0.37^@C in a 0.01 molal ...

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  10. The measured freezing point depression for a 0.1 m aqueous CH(3)COOH s...

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  11. Calculate the molal depression constant of a solvent which has freezin...

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  12. Calculate the freezing point of a solution that contains 30 g urea in ...

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  13. 20 g of a non-volatile solute is added to 500 g of solvent. Freezing p...

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  14. What happens to freezing point of benzene when nephthalens is added ?

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  15. Freezing point of urea solution is -0.06^(@)C. How much urea (M.W. = 6...

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  16. When 0.01 mole of sugar is dissolved in 100 g of a solvent the despers...

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  17. Assertion :- The freezing point is the temperature at which solid crys...

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  18. Assertion (A): The increasing pressure on water decreases its freezing...

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  19. Statement - The water pouch of instant cold pack for treating athlet...

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  20. If molarity of the dilute solutions is doubled ,the value of molal dep...

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