The Chemistry Involved in the Titrimetric Exercises NEET Questions

Organic Chemistry - Principles of Practical Chemistry

The Chemistry Involved in the Titrimetric Exercises MCQ Questions


13.
Why is oxalic acid dihydrate, not anhydrous oxalic acid, used as a primary standard?
A.
Dihydrate has lower equivalent weight
B.
Anhydrous form is coloured
C.
Dihydrate dissolves more slowly
D.
Anhydrous form is hygroscopic; dihydrate has definite composition
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ANSWER :
D. Anhydrous form is hygroscopic; dihydrate has definite composition
14.
Number of moles in 250 mL of 0.1 M HCl is:
A.
0.025 mol
B.
0.1 mol
C.
0.25 mol
D.
0.0025 mol
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ANSWER :
A. 0.025 mol
15.
Equation N1V1 = N2V2 is valid because:
A.
Volumes always equal each other
B.
Equivalents of acid equal equivalents of base at the equivalence point
C.
Indicator demands it
D.
Density is constant
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ANSWER :
B. Equivalents of acid equal equivalents of base at the equivalence point
16.
Which apparatus is used to deliver a measured variable volume of a solution?
A.
Volumetric flask
B.
Pipette
C.
Burette
D.
Reagent bottle
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ANSWER :
C. Burette
17.
A pipette is used to:
A.
Measure mass of liquid
B.
Determine pH
C.
Deliver any variable volume
D.
Deliver a fixed accurate volume
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ANSWER :
D. Deliver a fixed accurate volume
18.
A volumetric flask is used to:
A.
Distill liquids
B.
Prepare a solution of accurately known volume
C.
Heat a solution
D.
Filter solid impurities
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ANSWER :
B. Prepare a solution of accurately known volume