12th Chemistry Volume 2 Study Material. We covered all the 12th Chemistry Volume 2 Study Material in this post for free so that you can practice well for the exam.
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12th Chemistry Volume 2 Objective Study Material for Students
What happens to F.P. of benzene when naphthalene is added?
(A) Increases
(B) Decreases
(C) remains unchanged
(D) First decreases, then increases
Option b – Decreases
The abnormal molar mass of the solute is due to
(A) Association
(B) Dissociation
(C) Association or dissociation
(D) Neither association nor dissociation
Option c – Association or dissociation
The i for 0.005 M aq. KCl solution is 1.95. The degree of dissociation of KCl is
(A) 0.95
(B) 0.97
(C) 0.94
(D) 0.96
Option a – 0.95
Association or dissociation of solute (electrolyte) in solvent molar mass of solute
(A) Increase
(B) Decreases
(C) May increase or decrease
(D) Remains constant
Option c – May increase or decrease
Van’t a Hoff factor (i) for a solute that undergoes dissociation in one solvent and association in another solvent is respectively
(A) Greater than one and greater than one
(B) Less than one and greater than one
(C) Greater than one and less than one
(D) Less than one and less than one
Option b – Less than one and greater than one
X solute dissolved in a solvent associated to form pentamer. i value is
(A) 0.5
(B) 5
(C) 0.2
(D) 0.1
Option c – 0.2
What is the effect on the freezing point of water adding urea in water?
(A) FP. decreases
(B) F.P. increases
(C) FP doubles
(D) F.P. remains constant
Option a – FP. decreases
A solution of sucrose (molar mass 342) has been prepared by dissolving 68.5 of sucrose in 1 kg of water. The freezing point of the solution will be (Kf = 1.86 C/m)
(A) -0.372 °C
(B) -0.520 °C
(C) +0.372 °C
(D) -570 °C
Option a – -0.372 °C
For a nonelectrolyte solution Van’t a Hoff factor (i) equal to
(A) 0
(B) 1
(C) 2
(D) Between 1 and 2
Option b – 1
A substance ‘A’ dissolved in solvent ‘B’ shows molar mass A3. i value is
(A) 1
(B) 2
(C) 2
(D) 1/3
Option d – 1/3
Van’t the Hoff factor of equal concentration of x, y, and z is 1.8, 0.8, and 2.5 then the correct order will be
(A) Boiling point x <y<Z
(B) Freezing point z<x<y
(C) Osmotic pressure x = y = z
(D) Vapour pressure y<x< Z
Option b – Freezing point z
We covered all the 12th chemistry volume 2 study material above in this post for free so that you can practice well for the exam.
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