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NEET UG CHEMISTRY MCQ: SOLUTIONS

1 Hard

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Application +4 | -1

{K_2}Hg{I_4}

is 40% ionized in aqueous solution. The value of its van’t Hoff factor

(i)

is

View answer and explanation

Correct option: B

1.8

Option B (1.8) is correct because the van't Hoff factor is calculated based on the ionization of K2HgI4 into ions.

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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

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B

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

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