Q.1.
"Relative lowering in vapour pressure of solution containing non-volatile solute is directly proportional to mole fraction of solute." Above statement is : [AFMC 2004]
-
15%
a) Henry law
-
5%
b)Dulong and Petit law
-
79%
c)Raoult's law
-
0%
d)Le-Chatelier's principle
Explanation
Q.2.
To prepare a solution of concentration of 0.03 g/mL of AgN03, what amount of AgN03 should be added to 60 mL of solution? [AFMC 2005]
-
44%
a) 1.8 g
-
22%
b)0.8 g
-
30%
c) 0.18 g
-
4%
d)None of these
Q.3.
0.5 M of H2SO4 is diluted from 1 L to 10 L, normality of resulting solution is : [AFMC 2005]
-
38%
a) 1N
-
38%
b) 0.1N
-
23%
c) 10N
-
0%
d) 11 N
Q.4.
A 5 molar solution of H2SO4 is diluted from 1 L to 10 L. What is the normality of the solution?[AFMC 2005]
-
24%
a)0.25N
-
60%
b) 1 N
-
4%
c)2N
-
12%
d)7N
Q.5.
Isotonic solutions have: [AFMC 2006]
-
4%
a)same vapour pressure
-
84%
b)same osmotic pressure
-
0%
c)same boiling point
-
12%
d)same temperature
Q.6.
Methanol and ethanol are miscible in water due to: [AFMC 2007]
-
19%
a) covalent character
-
69%
b) hydrogen bonding character
-
12%
c)oxygen bonding character
-
0%
d)none of the above
Q.7.
Addition of common salt ro a sample of water will ...[ AFMC 1994]
-
4%
a) increases its freezing point and increases the boiling point
-
56%
b) decreases its freezing point and increases the boiling point
-
36%
c) increases both the boiling point and the freezing point
-
4%
d) decreases both the boiling and freezing point
Q.8.
n aqueous solution of glucose is 10% in strength. The volume in which 1 g mole of it is dissolved will be [AFMC 2007]
-
22%
a) 18L
-
22%
b) 9L
-
30%
c) 0.9L
-
26%
d) 1.8L
Q.9.
.01 mole of a non-electrolyte is dissolved in 10g of water. The molality of the solution is [ AFMC 2008]
-
10%
a)0.1 m
-
15%
b)0.5 m
-
50%
c)1.0m
-
25%
d)0.18m
Explanation
Q.10.
hich of the following solutions will exhibit highest boiling point? [AFMC 2008]
-
26%
a)0.01 M Na2SO4 (aq)
-
41%
b) 0.01 M KNO3 (aq)
-
26%
c) 0.015 M urea (aq)
-
7%
d) 0.015 M glucose (aq)
Q.11.
n pressure cooker food is made faster because [AFMC 2009]
-
9%
a) boiling point of water is lowered
-
52%
b) boiling point of water is increased.
-
26%
c)heat is concentrated on food only
-
13%
d)heat spreads every where.
Q.12.
hich of the following is a colligative property? [AFMC 2009]
-
0%
a) Surface tension
-
10%
b) Viscosity
-
80%
c) Osmotic pressure
-
10%
d) Boiling point
Q.13.
Relation between partial pressure and mole fraction is stated by [AFMC 2009]
-
4%
a)Graham's law
-
74%
b)Raoult's law
-
17%
c)Le-Chatelier
-
4%
d)Avogadro law
Q.14.
0.1N 50ml H2SO4 , (N/3) 30 ml HNO3, 0.5N 10ml HCl is mixed and solution is made to 1L. Then normality of resultant solution is [AFMC 2009]
-
30%
a) N/20
-
17%
b)N/40
-
39%
c)N/50
-
13%
d)N
Q.15.
Vapour pressure of benzene at 30°C is 121.8mm When 15g of a non-volatile solute is dissolved in 250 g of benzene, its vapour pressure is decreased to 120.2 mm. The molecular weight of the solute is [AFMC 2009]
-
24%
a)35.67 g
-
29%
b)356.7 g
-
41%
c) 432.8 g
-
6%
d) 502.7 g
Explanation
Q.16.
The molal elevation constant for water is 0.What will be the boiling point of 2 molar sucrose solution at 1 atm. pressure? (Assume B.P. of pure water as 100°C) [AFMC 2011]
-
22%
a) 101.04°C
-
33%
b) 100.26°C
-
22%
c) 100.52°°C
-
22%
d) 99.74°C
Q.17.
At a particular temperature, the vapour pressures of two liquids A and B are respectively 120 and 180 mm of mercury. If 2 moles of A and 3 moles of B are mixed to form an ideal solution, the vapour pressure of the solution at the same temperature will be (in mm of mercury) [AFMC 2011]
-
41%
a)156
-
18%
b)145
-
18%
c)150
-
24%
d)108
Q.18.
At same temperature, which pair of the following solutions are isotonic solution? (GUJCET 2006)
-
19%
a) 0.1M NaCl and 0.1M K2SO4
-
44%
b)0.1M Ba(NO3)2 and 0.1M Na2SO4
-
12%
c) 0.2M BaCl and 0.2M urea
-
25%
d)0.1M urea and 0.1M NaCl
Q.19.
Normality of 0.04M H2SO4 is … (GUJCET 2006)
-
56%
a)0.08N
-
12%
b)0.01N
-
19%
c)0.04N
-
12%
d)0.02N
Q.20.
Freezing point of Urea solution is -0.6OC. How much urea is required to be dissolved in 3kg water? (Molecular wt urea=60g/mole, Kf=1.5OCkg/mole) (GUJCET 2007)
-
18%
a) 2.4 gram
-
35%
b) 3.6 gram
-
24%
c) 6.0 gram
-
24%
d) 72 gram
Explanation
Q.21.
Find out the osmotic pressure of 0.25M aqueous solution of urea at 27oC. ( R=0.082 lit atm / mole K, R=1.987 cal) (GUJCET 2007)
-
19%
a)0.0615 atm
-
12%
b)61.5 atm
-
38%
c) 6.15 atm
-
31%
d)0.615 atm
Q.22.
Find out the normality of a solution, when 9.8 grams of H2SO4 is dissolved in 500 ml solution (GUJCET 2008)
-
13%
a)4.0
-
20%
b)0.8
-
27%
c)0.2
-
40%
d)0.4
Q.23.
The increase in boiling point of solution containing 0.6 gram urea in 200gram water is 0.5oC. Find the molal elevation constant.(GUJCET 2009)
-
12%
a) 1.0 kg/mol
-
24%
b) 10 K kg mol
-
29%
c)10 K g mol-1
-
35%
d)10 K kg mol-1
Explanation
Q.24.
100ml of liquid A was mixed with 25ml of a liquid B to give a non-ideal solution of A-B mixture. The volume of this mixture will be.... [ Haryana CEET 1991]
-
6%
a) 75ml
-
18%
b) 125ml exact
-
47%
c) fluctuating between 75ml and 125ml
-
29%
d) close to 125 ml but not exceed 125ml
Q.25.
How many grams of NaOH will be required to prepare 500grams solution containing 10% w/w NaOH solution? (GUJCET 2009)
-
27%
a) 50 gram
-
18%
b) 5.0 gram
-
36%
c) 4.0 gram
-
18%
d) 40.0 gram
Explanation
Q.26.
Calculate the normality of 250 ml aqueous solution of H2SO4 having pH=0.00 (GUJCET 2010)
-
29%
a) 2N
-
21%
b)1N
-
29%
c)0.5N
-
21%
d)0.25N
Q.27.
How many grams of sulphuric acid is to be dissolved to prepare 200 ml aqueous solution having concentration of [H3O+] ions 1M at 25OC temperature [H=1, O=16, S=32 gram/mole](GUJCET 2011)
-
13%
a) 4.9 gram
-
33%
b)19.6 gram
-
40%
c)9.8 gram
-
13%
d)0.98 gram
Explanation
Q.28.
The vapour pressure of benzene at 30oC is 121.8mm. By adding 15g of non-volatile solute in 250g of Benzene, its vapour pressure is decreased to 120.2 mm. The molecular weight of solute is... [AIIMS 1997]
-
25%
a) 156.6g
-
17%
b) 267.4 g
-
50%
c) 356.3g
-
8%
d) 467.4g
Explanation
Q.29.
Temperature does not affect: [AIIMS 1997, 2001]
-
12%
a) Molarity
-
0%
b) Formality
-
81%
c) Molality
-
6%
d) Normality
Q.30.
When common salt is dissolved in water
-
33%
a) Boiling point of solution decreases
-
13%
b) Melting point of solution increases
-
40%
c) Boiling point of solution increases
-
13%
d) Both melting point and boiling point decreases