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 - 3
Question 1:
How much oxygen is dissolved in 100 rnL water at 298 K if partial pressure of oxygen is 0.5 atm and K = 1.4 × 10-3 mol/L/atm?
(a) 22.4 mg
(b) 22.4 g
(c) 2.24 g
(d) 2.24 mg
Correct Answer – (D)
Question 2 :
Atomic mass is equal to
(a) number of electrons of an atom
(b) sum of the numbers of electrons and protons of an atom
(c) sum of the numbers of neutrons and protons of an atom
(d) none of these
Correct Answer – (B)
Question 3 :
The vapour pressure of the two liquids ‘P’ and ‘Q’ are 80 and 60 torr respectively. The total vapour pressure of the solution obtained by mixing 3 mol of P and 2 mole of Q would be
(a) 68 torr
(b) 140 torr
(c) 72 torr
(d) 20 torr
Correct Answer – (C)
Question 4 :
Equimolar solutions in the same solvent have
(a) Same B.Pt but different F. Pt
(b) Same F. Pt, but different B.Pts.
(c) Same Boiling and same freezing point
(d) Different boiling and different freezing points.
Correct Answer – (C)
Question 5 :
Which has the minimum osmotic pressure?
(a) 200 ml of 2 M NaCl
(b) 200 ml of 1 M glucose
(c) 200 ml of 2 M urea
(d) all have same.
Correct Answer – (B)
MCQ Questions Class 12 Solutions with Answers
Question 6 :
Henry’s law constant for molality of methane is benzene at 298 K is 4.27 × 105 mm Hg. The mole fraction of methane is nenzene at 298 K under 760 mm Hg is
(a) 1.78 × 10-3
(b) 17.43
(c) 0.114
(d) 2.814
Correct Answer – (A)
Question 7 :
X is dissolved in water. Maximum boiling point is observed when X is ………… (0.1 M each)
(a) CuSO4
(b) BaCl2
(c) NaCl
(d) Urea
Correct Answer – (B)
Question 8 :
The mole fraction of the solute in one molal aqueous solution is
(a) 0.027
(b) 0.036
(c) 0.018
(d) 0.019
Correct Answer – (C)
Question 9 :
Solution A contains 7 g L-1 MgCl2 and solution B contains 7 g L-1 of NaCl. At room temperature, the osmotic pressure of
(a) solution A is greater than B
(b) both have same osmotic pressure
(c) solution B is greater than A
(d) Can’t determine.
Correct Answer – (C)
Question 10 :
The average osmotic pressure of human bipod is 7.8 bar at 37°C. What is the concentration of an aqueous solution of NaCl that could be used in blood stream?
(a) 0.15 mol L-1
(b) 0.30 mol L-1
(c) 0.60 mol L-1
(d) 0.45 mol L-1
Correct Answer – (A)
- NCERT Solutions Class 11 Chemistry Chapter 1 : Some Basic Concepts of Chemistry
- 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
- NCERT Solutions Class 11 Chemistry Chapter 6 : Thermodynamics
- NCERT Solutions Class 11 Chemistry Chapter 7 : Equilibrium
- NCERT Solutions Class 11 Chemistry Chapter 8 : Redox Reactions
- NCERT Solutions Class 11 Chemistry Chapter 9 : Hydrogen
- NCERT Solutions Class 11 Chemistry Chapter 10 : The s-Block Elements
- NCERT Solutions Class 11 Chemistry Chapter 11 : The p-Block Elements
- NCERT Solutions Class 11 Chemistry Chapter 12 : Organic Chemistry: Some Basic Principles and Techniques
- NCERT Solutions Class 11 Chemistry Chapter 13 : Hydrocarbons
- NCERT Solutions Class 11 Chemistry Chapter 14 : Environmental Chemistry
