The Chemistry Involved in the Titrimetric Exercises NEET Questions

Organic Chemistry - Principles of Practical Chemistry

The Chemistry Involved in the Titrimetric Exercises MCQ Questions


7.
Why is sodium hydroxide not used as a primary standard?
A.
It is too costly
B.
It is hygroscopic and absorbs CO2 from air
C.
It is volatile
D.
It is coloured
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ANSWER :
B. It is hygroscopic and absorbs CO2 from air
8.
Normality (N) of a solution is defined as:
A.
Mass of solute per 100 g of solution
B.
Number of moles of solute per kg of solvent
C.
Number of moles of solute per litre of solution
D.
Number of gram-equivalents of solute per litre of solution
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ANSWER :
D. Number of gram-equivalents of solute per litre of solution
9.
Molarity of a solution depends on:
A.
Pressure only
B.
Temperature
C.
Volume of solvent only
D.
Nature of indicator
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ANSWER :
B. Temperature
10.
Equivalent weight of an acid is given by:
A.
Molar mass × basicity
B.
Molar mass × molarity
C.
Molar mass / acidity
D.
Molar mass / basicity
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ANSWER :
D. Molar mass / basicity
11.
Equivalent weight of oxalic acid (H2C2O4·2H2O) used as primary standard is:
A.
63
B.
90
C.
126
D.
31.5
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ANSWER :
A. 63
12.
In acid–base titration, oxalic acid acts as a:
A.
Strong base
B.
Monobasic acid
C.
Diprotic / dibasic acid
D.
Tribasic acid
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ANSWER :
C. Diprotic / dibasic acid