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NEET UG CHEMISTRY MCQ: SOLUTIONS

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Application +4 | -1

\mathrm{100}\;\mathrm{mL}\;\mathrm{of}\,\mathrm{0}\mathrm{.3}\;\mathrm{HCl}

is mixed with

200\;mL\;of\;0.6\;\mathrm{N}\;{\mathrm{H}_2}\mathrm{S}{\mathrm{O}_4}

. The final normality of the resulting solution will be

View answer and explanation

Correct option: C

0.5\;\mathrm{ }N

Option C (

0.5\;\mathrm{ }N

) is correct because the final normality is calculated by summing the milliequivalents of each acid and dividing by the total volume.

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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

B

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{K_f}

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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