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WorksheetsPharmaceutical Analysis 01
Total questions: 10
Worksheet time: 5mins
In volumetric analysis, the basis of analyte concentration is
Volume
Concentration
Weight
Both A and B
Volumetric Analysis is a
Qualitative method
Quantitative method
Semi quantitative method
Both A and B
Stiochiometric end point is
the point at which the color change is shown by the indicator
the point at which the reaction between titrant and titrate is just complete
the point at which equal volume of titrant and titrate reacts
Both A and B
The number of significant digits in 0.032 is
1
2
3
4
The number of significant digits in 410.00720 is
5
6
7
8
An analyst measures the volume of a solution as 8.89ml, but the actual volume is 10ml. Calculate the absolute error and relative error. (Relative error = Absolute error/standard value)
0.11 and 0.111
0.11 and 0.011
1.11 and 0.011
1.11 and 0.111
A person unable to judge the lower meniscus of burette at the endpoint during the titration comes under
Error of the method
Instrumental error
Personal error
Reagent error
Pure water contains
water molecules only
hydroxide ions only
hydronium ions only
water molecules, hydronium ions and hydroxide ions
If [H3O]+ ions of a solution is less than OH- ions, the solution is
always acidic
always basic
always neutral
may be acidic, basic or neutral
The pH scale in general uses ranges from
0 to 1
-1 to +1
0 to 7
0 to 14
