Engineering Entrance Sample Papers

JEE Mains Important Questions on Solutions (Chemistry)

chemistry Solutions class 12 MCQs
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Chemistry Chapter Wise JEE Mains Important Questions for Solutions with Answers MCQs:

Solutions Chemistry Important Questions

Question 1
A 500 g tooth paste sample has 0.2 g fluoride concentration. What is the concentration of F in terms of ppm level
A
200
B
1000
C
250
D
400
Question 2
Which of the following would have the highest osmotic pressure (assume that all salts are 90% dissociated)?
A
Decimolar barium chloride
B
A solution obtained by mixing equal of Decimolar barium chloride and Decimolar sodium sulphate and filtering
C
Decimolar sodium sulphate
D
Decimolar aluminium sulphate
Question 3
To 5.85 gm of NaCl one kg of water is added to prepare of solution. What is the strength of NaCl in this solution (mol. wt. of NaCl = 58.5)
A
0.1 Molal
B
0.1 Normal
C
0.1 Molar
D
0.1 Formal
Question 4
The boiling point of a solution of 0.11 gm of a substance in 15 gm of ether was found to be 0.1o C higher than that of the pure ether. The molecular weight of the substance will be (Kb = 2.16)
A
168
B
178
C
148
D
158
Question 5
Normal boiling point of water is 373 K (at 760mm). Vapour pressure of water at 298 K is 23 mm. If the enthalpy of evaporation is 40.656 kJ/mole, the boiling point of water at 23 mm pressure will be

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A
294 K
B
250 K
C
12.5 K
D
51.6 K
Question 6
An aqueous solution of a weak monobasic acid containing 0.1 g in 21.7g of water freezes at 272.813 K. If the value of Kf for water is 1.86 K/m, what is the molecular mass of the monobasic acid
A
46 g/mole
B
60 g/mole
C
50 g/mole
D
55 g/mole
Question 7
The amount of KMnO4 required to prepare 100 ml of 0.1 N solution in alkaline medium is
A
0.52 gm
B
1.58 gm
C
3.16 gm
D
0.31 gm
Question 8
The osmotic pressure of a 5% solution of cane sugar at 150o C is (mol. wt. of cane sugar = 342)

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A
5.07 atm
B
3.4 atm
C
4 atm
D
2.45 atm
Question 9
The vapour pressure of pure benzene at a certain temperature is 200 mm Hg. At the same temperature the vapour pressure of a solution containing 2g of non-volatile non-electrolyte solid in 78g of benzene is 195 mm Hg. What is the molecular weight of solid
A
80
B
85
C
70
D
50
Question 10
The degree of dissociation of Ca(NO3)2 in a dilute aqueous solution containing 14 g of the salt per 200 g of water 100o C is 70 percent. If the vapour pressure of water at 100o C is 760 cm. Calculate the vapour pressure of the solution
A
746.3 mm of Hg
B
740.9 mm of Hg
C
757.5 mm of Hg
D
750 mm of Hg
Question 11
Which solution will have the highest boiling point?
A
1% solution of glucose in water
B
1% solution of zinc sulphate in water
C
1% solution of urea in water
D
1% solution of sodium chloride in water
There are 11 questions to complete.
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