Pharamaceutical Analysis Unit-3 Semester-1 MCQs
1.With which of the following analytical methods is it possible to have the greatest precision?
A.Volumetric titration
B.Linear calibration
C.Gravimetric
D.Spectrophotometric
SOLUTION
Gravimetric
2.Crystal graphic defect is called as?
A.Inclusion
B.Mechanical Entrapment
C.Surface adsorption
D.Post precipitation
SOLUTION
Inclusion
3.Which sentence is false about preparation Titration??
A.It must be rapid and quantitative.
B.It must give insoluble precipitates at end point.
C.It must not affecting by co-precipitation or post precipitation.
D.It must be slow and quantitative.
SOLUTION
It must be slow and quantitative
4.Which method is used to determination of end point of Diazotization Titration
A. Starch iodine paper
B.Potentiometric titration
C. A and B
D. None of this
SOLUTION
A and B
5.Which masking agent used for metal aluminium and iron
Triethanolamine?
EDTA
Potassium Cyanide
Thioglycerol
SOLUTION
Triethanolamine
6.Which indicator are used to detected calcium in presence of magenisum
EDTA
XYLENOL ORANGE
Eriochrome black T
Murexide
SOLUTION
Murexide
7.Which sentence is false about masking agent??
A.NH4F is masking agent.
B.These reagent form complexes with interfering ions which are more stable than complexes with indicator & EDTA.
C.It is reagents which prevent interfering ion from reaction without physical separation.
D.This is reagent which regian the ability of masked ion to enter the reaction with Ind. & EDTA.
Solution
D.This is reagent which regian the ability of masked ion to enter the reaction with Ind. & EDTA.
8.Calcium containing compound are analysed by?
Aqueous titration
Non-aqueous titration
Complexometric titration
Potentiometric titration
SOLUTION
Complexometric titration
9.Which sentence is flase about EDTA?
A.Alkali medium is required for complex ion becoz EDTA will ionizes more in alkali medium.
B.EDTA form complexes with all metal ions
C.Ethylene diamine tetra acetic acid (EDTA) and its disodium salts are verstile D.complexometric agents
Alkali medium is required for complex ion becozEDTA will ionizes more in acidic medium
SOLUTION
D.complexometric agents
Alkali medium is required for complex ion becozEDTA will ionizes more in acidic medium
10.Assay of Magnesium trisilicate is
0.05 M disod. edetate
0.1 M disod. edetate
0.01 M disod. edetate
1 M disod. edetate
SOLUTION
0.05 M disod. edetate
11.Complexing agent is?
A.Electron donating ions
B.Electron accepting ions
C.A and B
D.None of the above
SOLUTION
Electron donating ions
12.Metal ions solution in a buffer is titrated with?
EDTA
Non-aqueous solvent
Water
All of the above
SOLUTION
All of the above
13.How many Types of gravimetric analysis
One
Two
Three
Four
SOLUTION
Two
14.Volatilization Method is?
Precipitation of solutions
Vaporizations of solutions
A and B
Bone of the above
SOLUTION
Precipitation of solutions
15.Which Titration is known as the Argintometric titration*
A.Acid base Titration
B.Diazotization Titration
C.Gravimetry
D.Precipitation Titration
SOLUTION
Precipitation Titration
16.Which is not application of complexometric titration?
A.Determination of hardness of water
B.To determine conc. of bad metals in the environment.
C.To determine the concentration of metal ions in solutions
D To assay of barbiturates.
SOLUTION
To assay of barbiturates
17.The end point of complexometric titrations is shown by means of?
Colorimetry
pH meter
pM Indicator
Acid base titration
SOLUTION
pM Indicator
18.Which analytical method is based on the weight of the PPT?
Acid base Titration
Complexometric Titration
Precipitation titration
Gravimetry
SOLUTION
Gravimetry
19.The metal indicator complex must possess sufficient stability to??
Resist dissociation
Sharp color change
A and B
None of the above
SOLUTION
A and B
20.PRECIPITATION TITRATION are classified by which mechanism?
Adsorption
Colour at end point
Ion exchange
All of the above
SOLUTION
Colour at end point
21.EDTA is a……
Tetradentate ligand
Hexadentate ligand
Octadentate ligand
Pentadentate ligand
SOLUTION
Hexadentate ligand
22.Auxiliary chelating agent forming complex with one metal in presence of other metal is called as……
Masking agents
Complexing agent
Indicator
All the terms have same meaning
SOLUTION
Masking agents
23.Which sentence is false about gravimetric analysis….
A.It is used for inorganic ion
B.It is used to assay barium sulphate
C.it is used to assay of aluminum
D.Relative precision 3 to 4%
SOLUTION
Relative precision 3 to 4%
24.Ammonium fluoride is masking agent is used for…
Aluminium
Copper
Iron
Heavy metals
SOLUTION
Iron
25.Erichrome black -T used indicator in which type of titration…
NMR
Non aqueous titration
Acid base titration
Complexometric titration
SOLUTION
Complexometric titration
26.Which one of the following indicator used in complexometric titration…..
Methyl orange
Phenolphthalein
Catachol violet
Crystal violet
SOLUTION
Catachol violet
27.Precipitation Method is…….
Precipitation of solutions
Vaporizations of solutions
A and B
Bone of the above
SOLUTION
Precipitation of solutions
28.What is WCN…..
A.Number of group that are attached to complex
B. Number of group that are attached to central atoms
C.A and B
D.None of the above
SOLUTION
Number of group that are attached to central atoms
29.Which is Example of Demasking agents…
KCN
KI
[Zn (CN)4]2-
NH4F
SOLUTION
[Zn (CN)4]2-
30.Complexometric titrations are useful for the determination…..
Non metal ions
Basic drug
Metal ions
None of the above
SOLUTION
Metal ions
31.Assay of Bismuth subcarbonate is…..
0.05 M disod. edetate
0.1 M disod. edetate
0.01 M disod. edetate
1 M disod. edetate
SOLUTION
0.1 M disod. edetate
32.Which error gives always positive error….
Inclusion
Mechanical Entrapment
Surface adsorption
Post precipitation
SOLUTION
Post precipitation
33.Which sentence is false about ligand..
It is act like lewis base
CN¯ is example of unidentate
It is electron donor group
EDTA is example of unidentate
SOLUTION
EDTA is example of unidentate
34.If the solution is Basic in nature in Mohr method what Happened…..
A.Silver hydroxide ppt formation is Decreased
B.Silver hydroxide ppt formation is increased
C.A and B
D.None of the above
SOLUTION
Silver hydroxide ppt formation is increased
35.What is rule of oxine in aluminum assay..
Surfactants
Colloidal
PPT agent
Emulsifier agent
SOLUTION
PPT agent
36.When foreign ions get trapped in growing crystal is called…
A.Inclusion
B.Mechanical Entrapment
C.Surface adsorption
D.Occlusion
SOLUTION
Occlusion
37.Which sentence is false about complexometric titration….
A.It is formed netural molecule
B.The anion is first precipitated with a metal cation in indirect titration
C.The anion and netural molecule is known as ligand
D.It is used to study for compound solubility
SOLUTION
It is used to study for compound solubility
38.End pointcolour in Mohr method is…
Red colour
Blue colour
Yellow colour
Black colour
SOLUTION
Red colour
39.Magnesium oxide content in magnesium compounds like Magnesium trisilicate, Mag. Carbonate and Mag. Sulphate are determined using…
A.Acid-base titration
B.Non-aqueous titration
C.Precipitation
D.Complexometric titration
SOLUTION
Complexometric titration
40.Impurity are absorbed in surface of the ppt is called….
A.Inclusion
B.Mechanical Entrapment
C.Surface adsorption
D.Post precipitation
SOLUTION
Surface adsorption
41.If acidic solution are used in Mohr method…
A.Chromates ion are decreased
B.Chromates ion are increased
C.A and B
D.None of the above
SOLUTION
Chromates ion are decreased
42.Metal indicator is used in…
A.Non-aqueous titration
B.Acid -base titration
C.Complexometric titration
D.Potentiometric titration
SOLUTION
Complexometric titration
43.Which sentence is true about a gravimetric analysis….
A.Relative precision 3 to 4%
B.It is expansive method
C.It is not used to to barium sulphate assay
D.It is used to assay of Al
SOLUTION
It is expansive method
44.Mordant Black II indicator used in..
Complexometric titration
Precipitation titration
Non-aqueous titration
Acid-base titration
SOLUTION
Complexometric titration
45.Inclusion error is give…
Positive error
Negative error
A and B
None of the above
SOLUTION
A and B
46.The compound not assayed by complexometric titration
Magnesium trisilicate
Sodium calcium edetate
Calcium lactate
Progesterone
SOLUTION
Sodium calcium edetate
47.Which method is used to determination of procaine…
Diazotization Titration
Karl fischer titration
OFC
All of the above
SOLUTION
Diazotization Titration
48.Which method are used to determination of primary amine.
Diazotization Titration
Karl fischer titration
OFC
All of the above
SOLUTION
Diazotization Titration
49.How many grams of NaNO2 are dissolve in 800 ml distilled water…
6.5 g
7.5 g
6.0 g
4.0 g
SOLUTION
7.5 g
50.Which type of solution is used in Mohr method…
Strong acid
Strong base
Neutral
A and B
SOLUTION
Neutral