Q.1.
How many moles of NaCl are contained in 100.0 mL of a 0.200 M solution?
-
18%
.0002
-
21%
.002
-
15%
2
-
46%
.02
Q.2.
find the molarity of the solution where mole fraction of solute is 0.5000 and Molar Mass of Solute is 49 g/Mole and Molar mass of solvent is 18 g/M and density of solution is 1.769 g/ml
-
29%
15.24
-
31%
12.24
-
29%
11.13
-
11%
10.1
Q.3.
What will be the molarity of a solution, which contains 5.85 g of NaCl per 500ml?
-
34%
.5 M
-
16%
.4 M
-
16%
1 M
-
34%
.2 M
Q.4.
What is the molarity of a solution that contains 1.724 moles of solute in 2.50 L of solution?
-
7%
.55 M
-
27%
1.1 M
-
10%
.670 M
-
57%
.690 M
Q.5.
The density of a 2.03 M solution of Acetic acid is water is 1.017 g/mL. The molality of the solution is
-
46%
2.27 m
-
25%
1.52 m
-
18%
2.5 m
-
11%
2 m
Q.6.
The number of Moles of KCL is 1000 ml of 3 Molar Solution is
-
19%
1
-
19%
1.5
-
55%
3
-
6%
2
Q.7.
we mix three solution of same solute of Molarity 1M, 2M ,3M and Volume 1 L,2L ,3L. Find the molarity of the resultant solution
Molarity of the resulting solution is given by
-
12%
3 M
-
17%
3.3 M
-
62%
2.33 M
-
8%
1 M
Q.8.
Which of the following modes of expressing concentration is independent of temperature
-
62%
Molality
-
17%
Formality
-
17%
Normality
-
4%
Molarity
Q.9.
If 100 ml of 1.0 M NaOH solution is diluted to 1 L, the resulting solution contains
-
48%
.1 Mole of NaOH
-
22%
.05 Mole of NaOH
-
22%
1 Mole of NaOH
-
9%
10 mole of NaOH
Q.10.
A Molal solution is one that contains one mole of solute in
-
16%
1 L of solvent
-
48%
1000 g of solvent
-
20%
22.4 L of solution
-
16%
1 L of solution
Q.11.
Assertion (A) : Significant figures for 0.10 is 2 where as for 10 it isReason (R) : Zero at the end or right of a number are significant provided they are not on the right side of the decimal point.
-
41%
A is true but R is false.
-
41%
Both A and R are true and R is correct explanation of A.
-
18%
Both A and R are false.
-
0%
Both A and R are true but R is not a correct explanation of A.
Q.12.
Assertion (A) : One atomic mass unit is defined as one twelfth of the mass of one carbon-12 atom.
Reason (R) : Carbon-12 isotope is the most abundunt isotope of carbon and has been chosen as standard.
-
12%
Both A and R are false.
-
58%
Both A and R are true but R is not the correct explanation of A.
-
8%
A is true but R is false.
-
21%
Both A and R are true and R is the correct explanation of A.
Q.13.
Which of the following pairs have the same number of atoms?
-
46%
28 g of N2 and 32 g of O2
-
21%
16 g of O2 and 44 g of CO2
-
21%
16 g of O2(g) and 4 g of H2(g)
-
12%
12 g of C(s) and 46 g of Na(s)
Q.14.
The value of $914 + 23.2$ using significant figures is
-
22%
930
-
17%
937.2
-
13%
938
-
48%
937
Q.15.
The number of gram molecule of oxygen in $6.02 \times 10^{24}$ CO molecules is
-
52%
5 gm-molecules
-
29%
.5 gm-molecules
-
10%
10 gm-molecules
-
10%
1 gm-molecules
Q.16.
The number of significant figures in 1060.50 is
-
29%
4
-
14%
3
-
43%
6
-
14%
5
Q.17.
The number of atoms of oxygen present in 88g of $CO_2$ is
-
14%
$24.092 \times 10^{22}$
-
29%
$12.046 \times 10^{23}$
-
38%
$24.092 \times 10^{23}$
-
19%
$6.023 \times 10^{23}$
Q.18.
The mole fraction of solvent in a solution where mole fraction of solute is .6
-
63%
.4
-
11%
1.6
-
0%
.6
-
26%
1
Q.19.
In the reaction 2X + 4Y → 3U + 4V, when 5 moles of X react with 6 moles of Y,
Then which of the following is incorrect
-
55%
the amount of V formed will be 5 moles
-
25%
the amount of U formed is 4.5 moles
-
10%
Insufficient information
-
10%
‘Y’ is the limiting reagent.
Q.20.
Match the column
-
7%
p -> i, q -> iii, r -> ii, s-> iv
-
7%
p -> ii, q -> iv, r -> iii, s-> i
-
63%
p -> ii, q -> iii, r -> iv, s-> i
-
22%
p -> ii, q -> i, r -> iv, s-> iii