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Chemistry

Previous Years Questions

Numerical

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The boiling point of water in a 0.1 molal silver nitrate solution (solution A) is x$$^\circ$$C. To this solution A, an e...
JEE Advanced 2021 Paper 1 Online
The boiling point of water in a 0.1 molal silver nitrate solution (solution A) is x$$^\circ$$C. To this solution A, an e...
JEE Advanced 2021 Paper 1 Online
Liquids A and B form ideal solution for all compositions of A and B at 25$$^\circ $$C. Two such solutions with 0.25 and ...
JEE Advanced 2020 Paper 2 Offline
On dissolving 0.5 g of a non-volatile non-ionic solute to 39 g of benzene, its vapor pressure decreases from 650 mmHg to...
JEE Advanced 2019 Paper 1 Offline
The plot given below shows $$P-T$$ curves (where $$P$$ is the pressure and $$T$$ is the temperature) for two solvents $$...
JEE Advanced 2018 Paper 1 Offline
Liquids A and B form ideal solution over the entire range of composition. At temperature $$T,$$ equimolar binary soluti...
JEE Advanced 2018 Paper 1 Offline
The mole fraction of a solute in a solution is 0.1. At 298 K, molarity of this solution is the same as its molality. Den...
JEE Advanced 2016 Paper 1 Offline
A compound H2X with molar weight of 80g is dissolved in a solvent having density of 0.4 gml–1 . Assuming no change in vo...
JEE Advanced 2014 Paper 1 Offline
MX2 dissociates in M2+ and X- ions in an aqueous solution, with a degree of dissociation ($$\alpha$$) of 0.5. The ratio ...
JEE Advanced 2014 Paper 1 Offline
75.2 g of C6H5OH (phenol) is dissolved in a solvent of Kf = 14. If the depression in freezing point is 7 K then find the...
IIT-JEE 2006

MCQ (Single Correct Answer)

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Pure water freezes at $$273$$ $$K$$ and $$1$$ bar. The addition of $$34.5$$ $$g$$ of ethanol to $$500$$ $$g$$ of water c...
JEE Advanced 2017 Paper 2 Offline
The qualitative sketches I, II and III given below show the variation of surface tension with molar concentration of thr...
JEE Advanced 2016 Paper 2 Offline
For a dilute solution containing 2.5 g of a non-volatile non-electrolyte solute in 100 g of water. the elevation in boil...
IIT-JEE 2012 Paper 2 Offline
The freezing point (in oC) of a solution containing 0.1 g of K3[Fe(CN)6] (Mol. wt. 329) in 100 g of water (Kf = 1.86 K k...
IIT-JEE 2011 Paper 2 Offline
The elevation in boiling point of a solution of 13.44 g of CuCl2 in 1kg of water using the following information will be...
IIT-JEE 2005 Screening

MCQ (More than One Correct Answer)

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For a solution formed by mixing liquids $$L$$ and $$M,$$ the vapor pressure of $$L$$ plotted against the mole fraction o...
JEE Advanced 2017 Paper 1 Offline
Mixture (s) showing positive deviation from Raoult’s law at 35oC is (are)
JEE Advanced 2016 Paper 2 Offline

Subjective

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1.22 g of benzoic acid is dissolved in 100 g of acetone and 100 g of benzene separately. Boiling point of the solution i...
IIT-JEE 2004
To 500 cm3 of water, 3.0 $$\times$$ 10-3 kg of acetic acid is added. If 23% of acetic acid is dissociated, what will be ...
IIT-JEE 2000
Nitrobenzene is formed as the major product along with a minor product in the reaction of benzene with a hot mixture of ...
IIT-JEE 1999
A solution of a nonvolatile solute in water freezes at -0.30oC. The vapour pressure of pure water at 298 K s 23.51 mm Hg...
IIT-JEE 1998
The molar volume of liquid benzene (density = 0.877 g mL-1) increases by a factor of 2750 as it vaporises at 20oC and th...
IIT-JEE 1996
What weight of the non-volatile solute, urea(NH2 - CO - NH2) needs to be dissolved in 100g of water, in order to decreas...
IIT-JEE 1993
The degree of dissociation of calcium nitrate in a dilute aqueous solution, containing 7.0 g. of the salt per 100 gm of ...
IIT-JEE 1991
The vapour pressure of pure benzene at a certain temperature is 640 mm Hg. A non-volatile non-electrolyte solid weighing...
IIT-JEE 1990
The vapour pressure of a dilute aqueous solution of glucose (C6H12O6) is 750 mm of mercury at 373 K. Calculate (i) molal...
IIT-JEE 1989
The vapour pressure of ethanol and methanol are 44.5 and 88.7 mm Hg respectively. An ideal solution is formed at the sam...
IIT-JEE 1986
An organic compound CxH2yOy was burnt with twice the amount of oxygen needed for complete combustion of CO2 and H2O. The...
IIT-JEE 1983
The vapour pressure of pure benzene is 639.7 mm of mercury and the vapour of a solution of a solute in benzene at the sa...
IIT-JEE 1981
What is the molarity and molality of a 13% solution (by weight) of sulphuric acid with a density of 1.02 g/ml? To what v...
IIT-JEE 1978

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