Topic: Solutions, Test No.: 06, Total MCQs: 10
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Question 1 |
'x' grams
of water is mixed in 69 grams of ethanol. Mole fraction of ethanol in the
resultant solution is 0.6. What is the value of 'x' in grams?
54 | |
36 | |
180 | |
18 |
Question 2 |
An
aqueous solution of glucose is 20% in strength. The volume in which 1 g-mole of
it is dissolved will be
8 L | |
1.8 L | |
9 L | |
0.9 L |
Question 3 |
Which of
the following set of variables give a straight line with a negative slope when
plotted?
(P = Vapour pressure; T =
Temperature in K)
| y-axis | x-axis | |
| (1) | P | T |
| (2) | log10 P | 1/T |
| (3) | log10 P | T |
| (4) | log10 P | log10 1/T |
Option (1) | |
Option (2) | |
Option (3) | |
Option (4) |
Question 4 |
250ml of
a solution contains 6.3 grams of oxalic acid (mol. wt. = 126). What is the
volume (in litres) of water to be added to this solution to make it a 0.1N
solution?
750 | |
7.5 | |
0.075 | |
0.75 |
Question 5 |
40% by
weight solution will contain how much mass of the solute in 1 L solution,
density of the solution is 1.2 g/mL?
480 g | |
48 g | |
38 g | |
380 g |
Question 6 |
By
dissolving 5 g substance in 50 g of water, the decrease in freezing point is
1.2°C. The molal depression is 1.85°C. The molecular weight of substance is
137.2 | |
118.2 | |
105.4 | |
154.2 |
Question 7 |
During
osmosis, flow of water through a semipermeable membrane is
from both sides of semipermeable membrane with equal flow rates | |
from both sides of the semipermeable membrane with unequal flow rates | |
from solution having lower concentration only | |
from solution having higher concentration only |
Question 8 |
When 20 g of
naphthoic acid (C11H8O2) is dissolved in 50 g
of benzene (Kf = 1.72 K kg mol–1) a freezing point
depression of 2 K is observed. The Van’t Hoff factor ‘i’ is
0.5 | |
1 | |
2 | |
3 |
Question 9 |
A 6% solution
of urea is isotonic with
0.05 M solution of Glucose | |
6% solution of Glucose | |
25% solution of Glucose | |
1 M solution of glucose |
Question 10 |
Dialysis can be used to separate
glucose and fructose | |
protein and starch | |
glucose and protein | |
glucose and NaCl |
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