CBSE Class 12 Solutions Multiple Choice Questions with Answers. MCQ Questions Class 12 Solutions with Answers Is Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 12 Solutions MCQs with Answers to know their preparation level.
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MCQ Questions Class 12 Solutions with Answers - Set - 5
Question 1:
Two solutions of a substance (non-electrolyte) are mixed in the following mariner: 480 mL of 1.5 M of first solution + 520 mL of 1.2 M second solution. What is the molarity of the final mixture?
(a) 1.20 M
(b) 1.50 M
(c) 1.344 M
(d) 2.70 M
Correct Answer – (C)
Question 2 :
If a is the clegree of dissociation of Na2SO4 the Van’t Hoff factor (i) used for calculating the molecular mass is
(a) 1 + α
(b) 1 – α
(c) 1 + 2α
(d) 1 – 2α
Correct Answer – (C)
Question 3 :
Which of the following units is useful in relating concentration of solution with its vapour pressure?
(a) Mole fraction
(b) Parts per million
(c) Mass percentage
(d) Molality
Correct Answer – (C)
Question 4 :
For carrying reverse osmosis for desalination of water the material used for making semipermeable membrane is
(a) potassium nitrate
(b) parchment membrane
(c) cellulose acetate
(d) cell membrane
Correct Answer – (C)
Question 5 :
The osmotic pressure of a solution can be increased by
(a) increasing the volume
(b) increasing the number of solute molecules
(c) decreasing the temperature
(d) removing semipermeable membrane
Correct Answer – (B)
MCQ Questions Class 12 Solutions with Answers
Question 6 :
The elevation in boiling point of a solution of 13.44 g of CuCl2 in 1 kg of water (Given Kb = 0.52 K kg mol-1, M. Wt. of CuCl2 = 134.4)
(a) 0.05
(b) 0.1
(c) 0.16
(d) 0.21
Correct Answer – (C)
Question 7 :
If an aqueous solution of glucose is allowed to freeze, then crystals of which substance will be separated and first?
(a) glucose
(b) water
(c) both of these
(d) none of these
Correct Answer – (B)
Question 8 :
What will be the degree of dissociation of 0.1 M Mg(NO3)2 solution if van’t Hoff factor is 2.74?
(a) 75%
(b) 87%
(c) 100%
(d) 92%
Correct Answer – (B)
Question 9 :
Sprinkling of salt helps in clearing the snow covered roads in hills. The phenomenon involved in the process is
(a) lowering in vapour pressure of snow
(b) depression in freezing point of snow
(c) melting of ice due to increase in temperature by putting salt
(d) increase in freezing point of snow
Correct Answer – (B)
Question 10 :
What weight of glycerol should be added to 600 g of water in order to lower its freezing point by 10°C ?
(a) 496 g
(b) 297 g
(c) 310 g
(d) 426 g
Correct Answer – (B)
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- NCERT Solutions Class 11 Chemistry Chapter 2 : Structure Of The Atom
- NCERT Solutions Class 11 Chemistry Chapter 3 : Classification of Elements and Periodicity in Properties
- NCERT Solutions Class 11 Chemistry Chapter 4 : Chemical Bonding and Molecular Structure
- NCERT Solutions Class 11 Chemistry Chapter 5 : States of Matter
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