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Estimation of molecular weight from freezing point depression

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1.After adding a solute in a solvent, the freezing point of the solvent is found to be decreased. This observation is referred as ?

a: Elevation of boiling point Explanation

Explanation

b: Depression of boiling point Explanation

Explanation

c: Depression of freezing point Explanation

Explanation

d: Elevation of freezing point Explanation

Explanation

2.The colligative property depends on the?

a: Number of total solvent present Explanation

Explanation

b: Amount of total solvent present Explanation

Explanation

c: Amount of added solute Explanation

Explanation

d: Number of added solute Explanation

Explanation

3.The correct relation between depression of freezing point and molality is?

a: ∆T_f= K_f ×molality Explanation

Explanation

b: ∆T_f= K_f /molality Explanation

Explanation

c: ∆T_f= molality/K_f Explanation

Explanation

d: ∆T_f= molality/K_b Explanation

Explanation

4.Unit of cryoscopic constant is ?

a: Kg. mol. K Explanation

Explanation

b: K-1. Kg. mol Explanation

Explanation

c: K. Kg. mol-1 Explanation

Explanation

d: Kg.mol-1. K-1 constant Explanation

Explanation

5.The definition of molality for a solution is ?

a: Number of moles of solute dissolved in per Kg of the solvent Explanation

Explanation

b: Number of moles of solute dissolved in per mL of the solvent Explanation

Explanation

c: Number of gram equivalent of solute dissolved in per mL of the solvent Explanation

Explanation

d: None of the above Explanation

Explanation

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