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QJEE MAIN 2023
Sea water contains $29.25 \% \mathrm{NaCl}$ and $19 \% \mathrm{MgCl}_2$ by weight of solution. The normal boiling point of the sea water is $\_\_\_\_$ $...
JEE MainChemistryHard
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QJEE MAIN 2023
If the boiling points of two solvents X and Y (having same molecular weights) are in the ratio 2 : 1 and their enthalpy of...
JEE MainChemistryEasy
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QJEE MAIN 2023
What weight of glucose must be dissolved in 100 g of water to lower the vapour pressure by 0.20 mm Hg ? (Assume dilute solution...
JEE MainPhysicsMedium
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QJEE MAIN 2023
A solution is prepared by adding 2g of “X” of 1 mole of water. Mass percent of “X” in the solution is:
JEE MainChemistryEasy
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QJEE MAIN 2023
An aqueous solution of volume $300 \mathrm{~cm}^3$ contains 0.63 g of protein. The osmotic pressure of the solution at 300 K is 1.29 mbar. The...
JEE MainChemistryEasy
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QJEE MAIN 2023
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: 3.1500 g of hydrated...
80 mole percent of MgCl2 is dissociated in aqueous solution. The vapour pressure of 1.0 molal aqueous solution of $\mathrm{MgCl}_2$ at $38^{\circ} \mathrm{C}$ is $...
JEE MainChemistryMedium
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QJEE MAIN 2023
$20 \%$ of acetic acid is dissociated when its 5 g is added to 500 mL of water. The depression in freezing point of such...
JEE MainChemistryMedium
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QJEE MAIN 2023
Lead storage battery contains $38 \%$ by weight solution of $\mathrm{H}_2 \mathrm{SO}_4$. The van't Hoff factor is 2.67 at this concentration. The temperature in Kelvin...
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