Solutions -… | NUST Entrance Test Chemistry

Raoult's law is obeyed by two miscible liquids if:

Difficulty: Easy

A:

Both $\triangle H and \triangle V$ are zero

B:

$\triangle H$ = 0

C:

$\triangle V$ = o

D:

Neither $\triangle H and \triangle V$ are zero

15 g of urea is dissolved in $180cm^{3}$ of water.The relative lowering of vapours will be:

Difficulty: Easy

A:

0.24

B:

2.4

C:

0.024

D:

24

Partial pressure of two liquid solutions is directly proportional to the mole fractions of liquids.This statement is known as:

Difficulty: Easy

A:

Distribution law

B:

Raoult's law

C:

Oswald Dilution law

D:

Henry law

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