Q.1.
Find the molarity of 5% aq. sucrose solution of density 1.1 gm/ml.
-
24%
.2 M
-
47%
.14 M
-
18%
.3 M
-
12%
.5 M
Q.2.
An ideal solution is formed when its components
-
19%
Have no change in volume on mixing
-
11%
Have no change in enthalpy on mixing
-
65%
have the both the above characteristics
-
5%
Have high solubility
Q.3.
Colligative properties are observed when _____________. (More than one answer)
-
62%
a non volatile solid is dissolved in a volatile liquid.
-
19%
a non volatile liquid is dissolved in another volatile liquid.correct
-
0%
a gas is dissolved in non volatile liquid.
-
19%
a volatile liquid is dissolved in another volatile liquid
Q.4.
which of the following is incorrect for ideal solution
-
14%
$\Delta H =0$
-
28%
$\Delta G =0$
-
22%
$\Delta U =0$
-
36%
$P =P_{obs} – P _{\text{Rauolt law}}=0$
Q.5.
If the molality of the dilute solution is tripled, the molal depression constant will become
-
34%
1/3
-
14%
3
-
6%
6
-
46%
remain unchanged
Q.6.
We have three aqueous solutions of NaCl labelled as ‘A’, ‘B’ and ‘C’ with concentrations 0.1M, 0.01M and 0.001M, respectively. The value of van’t Hoff factor for these solutions will be in the order______.
-
16%
$i_A < i_B < i_C$
-
35%
$i_A > i_B > i_C$
-
45%
$i_A =i_B = i_C$
-
3%
$i_A < i_B > i_C$
Q.7.
The vapour pressure of water at 293 K is 0.0231 bar & the vapour pressure of the solution of 108.24 gm of a compound in 1000 gm of water at the same temperature is 0.0228 bar, find the molar mass of the solute
-
24%
160 g
-
33%
150 g
-
38%
147 g
-
5%
142 g
Q.8.
The mole fraction of solute in 1 molal aqueous solution is
-
22%
.009
-
48%
.018
-
26%
.027
-
4%
.036
Q.9.
which of the following salt has the same value of Vant’s hoff factor(i) as that of $K_3[Fe(CN)_6]$
-
14%
$Na_2SO_4$
-
14%
HCL
-
41%
$AL(NO_3)_3$
-
32%
$AL_2(SO_4)_4$
Q.10.
Match the column
-
25%
p ->ii, q -> iv, r -> iii, s->i
-
40%
p ->ii, q -> iv, r -> ii, s->i
-
30%
p ->i, q -> iv, r -> ii, s->iii
-
5%
p ->i, q -> iv, r -> ii, s->ii
Q.11.
Assertion and Reason
(a) Assertion and reason both are correct statements and reason is correct explanation for assertion.
(b) Assertion and reason both are correct statements but reason is not correct explanation for assertion.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion and reason both are incorrect statements.
(e) Assertion is wrong statement but reason is correct statement.
Assertion : When a solution is separated from the pure solvent by a semipermeable membrane, the solvent molecules pass through it from pure solvent side to the solution side.
Reason : Diffusion of solvent occurs from a region of high concentration solution to a region of low concentration solution.
-
25%
(a)
-
30%
(b)
-
30%
(c)
-
5%
(d)
-
10%
(e)
Q.12.
Assertion and Reason
(a) Assertion and reason both are correct statements and reason is correct explanation for assertion.
(b) Assertion and reason both are correct statements but reason is not correct explanation for assertion.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion and reason both are incorrect statements.
(e) Assertion is wrong statement but reason is correct statement.
Assertion : the vapour pressure of the liquid decrease if non- volatile substance is added to the liquid
Reason : Relative lowering vapour pressure is equal to Mole fraction of solute
-
38%
(a)
-
33%
(b)
-
10%
(c)
-
14%
(d)
-
5%
(e)
Q.13.
Assertion and Reason
(a) Assertion and reason both are correct statements and reason is correct explanation for assertion.
(b) Assertion and reason both are correct statements but reason is not correct explanation for assertion.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion and reason both are incorrect statements.
(e) Assertion is wrong statement but reason is correct statement.
Assertion: An unripe mango placed in a concentrated salt solution to prepare pickle, shrivels
Reason: Mango loses water due to reverse osmosis.
-
33%
(a)
-
40%
(b)
-
13%
(c)
-
7%
(d)
-
7%
(e)
Q.14.
Assertion and Reason
(a) Assertion and reason both are correct statements and reason is correct explanation for assertion.
(b) Assertion and reason both are correct statements but reason is not correct explanation for assertion.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion and reason both are incorrect statements.
(e) Assertion is wrong statement but reason is correct statement.
Assertion : Molarity of a solution in liquid state changes with temperature.
Reason : The volume of a solution changes with change in temperature
-
26%
(a)
-
11%
(b)
-
21%
(c)
-
32%
(d)
-
11%
(e)
Q.15.
Link Comprehension type
The degree of dissociation of $ Ca(NO_3)_2$ in a dilute aqueous solution containing 7 g of the slat in 100 g of the solution at 100° C is 70 percent. The vapour pressure of the water at 100° C is 760 mm.
Find the Vant Off factor
-
25%
2.4
-
35%
3.2
-
30%
1.4
-
10%
1.6
Q.16.
Find the Vapour pressure of the solution
-
19%
720 mm
-
38%
745.3 mm
-
12%
754 mm
-
31%
650 mm
Q.17.
Link Comprehension type
The vapour pressures of ethanol and methanol are 44.5 mm and 88.7 mm Hg respectively. An ideal solution is formed at the same temperature by mixing 60 g of ethanol with 40 g of methanol
Calculate the total vapour pressure of the solution
-
20%
46.13 mm Hg
-
47%
56.25 mm Hg
-
20%
66.13 mm Hg
-
13%
80.15 mm Hg
Q.18.
Calculate the Mole fraction of ethanol in vapour
-
31%
.3437
-
38%
.6563
-
19%
.437
-
12%
.537
Q.19.
Find the Vapour pressure of Component A and B
-
50%
12.8mmHg, 43.40 mm hg
-
0%
10.73mmHg, 73.40 mm hg
-
25%
22.73mmHg, 53.40 mm hg
-
25%
22.73 mm Hg, 43.40 mm hg
Q.20.
A solution of acetone in ethanol
-
15%
behaves like a near ideal solution
-
20%
obeys Raoults law
-
35%
shows a negative deviation from Raoults law
-
30%
shows a positive deviation from Raoults law