WorksheetsPharmaceutical Analysis Quiz by Gaurav Sir
Total questions: 20
Worksheet time: 33mins
The solvents which are basic in nature and used to increase the acidity of weakly acidic substances are known as
Protogenic solvents
Protophilic solvents
Aprotic solvents
None of the above
The quantity of NaOH pellets required to prepare 0.05 M, 100 ml standard solution is
4 g
2 g
0.2 g
0.02 g
The approximate molecular weight of NaOH is
50g/mol
20g/mol
40g/mol
35g/mol
One of the following is not a property of secondary standard substance
Secondary standard substance is less pure than primary standard substance
Secondary standard substance is less stable than primary standard substance
Secondary standard substance cannot be weighed easily
secondary standard substance is more pure than primary standard substance
Number of moles of a solute per litre of solution is
Molarity
Molality
Normality
PPM
What does the term "redox" stand for?
Reduction and oxidation
Reduction and neutralization
Oxidation and precipitation
Oxidation and hydrolysis
Which indicator is commonly used in non-aqueous titrations involving perchloric acid?
Phenolphthalein
Methyl orange
Crystal violet
Bromothymol blue
What is the purpose of adding acetic anhydride in the preparation of 0.1N perchloric acid solution?
To increase the acidity of the solution
To remove water and make the solution anhydrous
To neutralize the perchloric acid
To act as a solvent
What type of solvent is glacial acetic acid?
Protophillic
Protogenic
Amphiprotic
Non-polar
Which of the following solvents is considered protophillic?
Sulfuric acid
Acetic acid
Water
Dimethylformamide
What is the main advantage of non-aqueous titrations?
Increased solubility of substances
Decreased selectivity in analysis
Reduced reaction speed
Higher water content in titrations
Which of the following is a major reason for using non-aqueous titrations in pharmaceutical analysis?
Poor solubility of compounds in water
High reactivity of compounds in water
Easy determination of all organic compounds
Non-reactivity of acids in water
when titrating strong acid with a strong base, the equivalence point will be
below a pH of 7.0
above a pH of 7.0
will be at a pH of 7.0
will be either above or below 7.0
An acid base titration involves a
composition reaction
neutralization reaction
single replacement reaction
displacement reaction
What is the reading on this burette?
(a)
__________ is a suitable indicator for the titration of a strong acid and a weak alkali.
Methyl orange
Phenolphthalein
Litmus solution
Universal indicator
The pH scale in general uses ranges from
0 to 1
-1 to +1
0 to 7
0 to 14
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
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
Volumetric Analysis is a
Qualitative method
Quantitative method
Semi quantitative method
Both A and B
