Which following factor (s) affect the solubility of a gaseous solute in the fixed volume of liquid solvent ?
(i) nature of solute
(ii) temperature
(iii) pressure

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(a)

(i) and (iii) at constant T

(b)

(i) and (ii) at constant P

(c)

(ii) and (iii) only

(d)

(iii) only

4 L of  0.02 M aqueous solution of NaCI was diluted by adding 1L of water. The molarity of the resultant solution is............

1

(a)

0.004

(b)

0.008

(c)

0.012

(d)

0.016

Which of the following aqueous solutions should have the highest boiling point?

1

(a)

1.0M NaOH

(b)

1.0M Na₂SO₄

(c)

1.0M NH₄NO₃

(d)

1.0M KNO₃

What happens to freezing point of benzene when naphthalene is added?

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(a)

Increases

(b)

 Decreases

(c)

Remains unchanged

(d)

 First decreases and then increases

The order of boiling points of four equimolar aqueous solutions is C < B < A < D. The correct order of their freezing points is

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(a)

D<C<B<A

(b)

D>C<B<A

(c)

D<B>A<C

(d)

D>A>B>C