NEET UG CHEMISTRY MCQ: SOLUTIONS

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Solubility of a substance is its maximum amount that can be dissolved in a specified amount of solvent.
It depends upon

(i) nature of solute

\quad

(ii) nature of solvent

\quad

(iii) temperature

\quad

(iv) pressure

View answer and explanation

Correct option: D

(i), (ii), (iii) and (iv)

Option D ((i), (ii), (iii) and (iv)) is correct because the solubility of a substance depends on the nature of the solute, the nature of the solvent, the temperature, and the pressure.

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Consider the solution of ethanol. In it Assertion: Isotonic solutions don't show net phenomenon of osmosis.

Reason: Isotonic solutions have equal osmotic pressure at constant temperature. 0.2 molal aqueous solution of a monobasic acid is 60% ionised. If Kb for water is

0.52\,K\,kg\,mo{l^{ - 1}}

then the boiling point of the solution will be The vapour pressures of pure liquids

A

and

B

are 400 and 600 mmHg, respectively at 298 K. On mixing the two liquids, the sum of their initial volumes is equal to the volume of the final mixture. The mole fraction of liquid

B

is 0.5 in the mixture. The vapour pressure of the final solution, the mole fractions of components

A

and

B

in vapour phase, respectively are What is molecular weight of a substance whose 7.0% by mass solution in water freezes at

--{0.93^0}C

{K_f}

for water is

1.86\mathrm{ }K\mathrm{ }kg\mathrm{ }mo{l^{ - 1}}

A mixture of ethyl alcohol and propyl alcohol has a vapour pressure of 290 mm at 300 K. the vapour pressure of propyl alcohol is 200 mm. If the mole fraction of ethyl alcohol is 0.6, its vapour pressure (in mm) at the same temperature will be