Different Methods for Expressing the Concentration of Solution (Molality, Molarity, Mole Fraction,..) NEET Questions

Physical Chemistry - Solutions

Different Methods for Expressing the Concentration of Solution (Molality, Molarity, Mole Fraction,..) MCQ Questions


13.
What is the unit of molarity?
A.
mol/kg
B.
mol/L
C.
mol/mL
D.
mol/g
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ANSWER :
B. mol/L
14.
The mole fraction of solute in a 1 molal aqueous solution is approximately:

NEET - 2020

A.
0.018
B.
0.036
C.
0.053
D.
0.09
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ANSWER :
B. 0.036
15.
Molarity depends on:
A.
Temperature
B.
Pressure
C.
Mass
D.
Volume
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ANSWER :
A. Temperature
16.
Which concentration term is affected by temperature changes?
A.
Molarity
B.
Molality
C.
Mole fraction
D.
Weight percent
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ANSWER :
A. Molarity
17.
What is the mole fraction of water in pure water?
A.
0.5
B.
0.25
C.
1
D.
0.75
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ANSWER :
C. 1
18.
A solution contains 30% ethanol by volume. This means:

NEET - 2017

A.
30 mL ethanol in 100 mL solution
B.
30 mL ethanol in 70 mL solution
C.
30 g ethanol in 100 mL solution
D.
30 g ethanol in 70 mL solution
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ANSWER :
A. 30 mL ethanol in 100 mL solution