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Statement - The water pouch of instant...

Statement - The water pouch of instant cold pack for treating athletic injuries breakes when squeezed and `NH_(4)NO_(3)` dissolves lowering the temperature.
Explanation - Addition of non-volatile solute into solvent results into depression of freezing point of solvent.

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

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The correct Answer is:
A
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ERRORLESS -SOLUTION -ORDINARY THINKING OBJECTIVE QUESTIONS (Depression of freezing point of the solvent )
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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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