Raoult's and Henry's law - Free MCQ Practice Test with solutions, JEE Chemistry
MCQ Practice Test & Solutions: Test: Raoult's and Henry's law (15 Questions)
You can prepare effectively for JEE Chemistry for JEE Main & Advanced with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Raoult's and Henry's law". These 15 questions have been designed by the experts with the latest curriculum of JEE 2026, to help you master the concept.
Test Highlights:
- - Format: Multiple Choice Questions (MCQ)
- - Duration: 20 minutes
- - Number of Questions: 15
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A 5.2 molal aqueous solution of methyl alcohol (CH3OH) is supplied. What is the mole fraction of methyl alcohol in the solution?
Detailed Solution: Question 1
Two 1-litre flask 
and 
are connected to each other by a valve which is closed. Flask A has benzene in equilibrium with its vapours at 
. The flask 
, is evacuated, and the valve is opened. Which of the following is true. If temperature is kept constant.'
Detailed Solution: Question 2
Detailed Solution: Question 3
and 
OH form non-ideal solution. Solutions that do not obey Raoult's law over the entire range of concentration are known as non-ideal solutions. Ethyl iodide and ethyl alcohol are chemically dissimilar and form a non-ideal solution.Vapour pressure (in torr) of an ideal solution of two liquids 
and 
is given by : 
where 
is the mole fraction of 
in the mixture. The vapour pressure (in torr) of equimolar mixture of the two liquids will be :
and is given by : where is the mole fraction of in the mixture. The vapour pressure (in torr) of equimolar mixture of the two liquids will be :Detailed Solution: Question 4
torr 
torr
torrThe vapour pressure (at the standard boiling point of water) of an aqueous solution containing 
by mass of a non-volatile normal solute (molecular mass = 28) will be
by mass of a non-volatile normal solute (molecular mass = 28) will beDetailed Solution: Question 5
;
torrAt a particular temperature, the vapour pressures of two liquids 
and 
are respectively 120 and 
of mercury. If 2 moles of 
and 3 moles of 
are mixed to form an ideal solution, the vapour pressure of the solution at the same temperature will be (in mm of mercury)
Detailed Solution: Question 6
Which one of the following binary mixtures forms an azeotrope with minimum boiling point type?
Detailed Solution: Question 7
ethanol.The vapour pressure of pure benzene and toluene at a particular temperature are 
and 
respectively. Then the mole fraction of benzene in vapour phase in contact with equimolar solution of benzene and toluene is
Detailed Solution: Question 8
vapour pressure of pure benzene 
vapour pressure of toluene
A solution at 
is composed of 
of benzene and 
of toluene. If the vapour pressure of pure benzene and pure toluene at this temperature are 
torr and 
torr, respectively, then the total vapour pressure of the solution and the benzene mole fraction in equilibrium with it will be, respectively :
is composed of of benzene and of toluene. If the vapour pressure of pure benzene and pure toluene at this temperature are torr and torr, respectively, then the total vapour pressure of the solution and the benzene mole fraction in equilibrium with it will be, respectively :Detailed Solution: Question 9
torr, 
torr
torr
torr 
torr
Detailed Solution: Question 10
, which is equal to mole fraction of solute which is independent of temperature.For an ideal solution of two components 
and B, which of the following is true?
and B, which of the following is true?Detailed Solution: Question 11
Which one of the following gases has the lowest value of Henry's law constant?
Detailed Solution: Question 12
i.e. as the solubility increases, value of Henry's law constant decreases. Since 
is most soluble in water among the given set of gases. Therefore 
has the lowest value of Henry's law constant.Which of the following statement is correct if the intermolecular forces in liquids 
and 
are in the order 
Detailed Solution: Question 13
At 
and 1 atmosphere partial pressure of hydrogen, 
of hydrogen measured at STP dissolves in 
of water. If water at 
is exposed to a gaseous mixture having a total pressure of 
of 
(excluding the vapour pressure of water) and containing 
hydrogen by volumne, then the volume of hydrogen measured at STP that will dissolve in 1 L of water is
Detailed Solution: Question 14
of 
atmosphere 
; or 
100 mL of liuqid 'A' was mixed with 25 ml of a liquid 'B' to give a non-ideal solution of A-B mixture showing (-) ve deviation from Raoult's law. The volume of this mixture would be
Detailed Solution: Question 15
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