Pharmaceutical Analysis MCQ with Answers Free Pdf in 2024

Pharmaceutical Analysis MCQ with Answers Free Pdf specifically strengthens the knowledge about Pharmaceutical Analysis. This mcq comprises various chapters such as Pharmaceutical Analysis and Errors, Acid Base Titration, Non-aqueous Titrations, Redox Titrations and Electrochemical Methods of Analysis.

Pharmaceutical Analysis & Errors MCQ

1. Which one always acts as an oxidizing Agent

(A) HNO3
(B) MnO2
(C) H202
(D) SO2

Ans. A) HNO3

2. In Column chromatography, the Stationary phase is made of…. And the mobile phase is made of….
(A) Solid, liquid
(B) Liquid, liquid
(C) Liquid, gas
(D) Solid, gas

Ans. A) Solid, liquid

3. In a measurement, what is the term Used to specify the closeness of two or more measurements
(A) Precision
(B) Accuracy
(C) Fidelity
(D) Threshold

Ans. A) Precision

4. Gas chromatography can be performed In one of the following ways
(A) Only in columns
(B) Only on plane surfaces
(C) Either in columns or on plane surfaces
(D) Neither in columns nor on plane Surfaces

Ans. A) Only in columns

5. In chromatography, the stationary Phase can be….. supported by Solid
(A) Solid or liquid
(B) Liquid or gas
(C) Solid only
(D) Liquid only

Ans. A) Solid or liquid

6. In Gas-liquid phase chromatography, The stationary phase is composed of ……And the mobile phase is made of……
(A) Solid, liquid
(B) Liquid, liquid
(C) Liquid, gas
(D) Solid, gas

Ans. C) Liquid, gas

7. Using the normality equation normality of An unknown solute is determined By using the relation
(A) N1 V1 =V2N2
(B) V1 V2=N1 N2
(C) N1/V2=V1/N2
(D) N2=N1V1/V2

Ans. D) N2=N1V1/V2

8. In which of the following type of paper, chromatography does the Mobile phase move horizontally over a Circular sheet of paper
(A) Ascending paper chromatography
(B) Descending paper chromatography
(C) Radial paper chromatography
(D) None of the above

Ans. C) Radial paper chromatography

9. Which current is measured in Amperometric titrations
(A) Diffusion current
(B) Kinetic current
(C) Limiting current
(D) Residual current

Ans. A) Diffusion current

10. No moles of solute dissolved per Liter of the solution are called
(A) Molarity
(B) Normality
(C) Molality
(D) Mole fraction

Ans. A) Molarity

11. The principle of RIA is based on
(A) Antigen-Antibody reaction
(B) Antigen-Antibody complex
(C) Unlabelled antigen
(D) Antibody

Ans. A) Antigen-Antibody reaction

12. Which of the following types of Chromatography involves the Separation of substances in a mixture Over a 0.2mm thick layer of an Adsorbent
(A) Gas-liquid
(B) Column
(C) Thin layer
(D) Paper

Ans. C) Thin layer

13. The secondary standard solution is
(A) HCI
(B) Na2C03
(C) Oxalic Acid
(D) KMno4

Ans. A) HCl

14. The process of separation of the mixture Into individual components using the Stationary phase and the mobile phase is Called as
(A) Chromatography
(B) Resolution
(C) Retention factor
(D) Adsorption

Ans. A) Chromatography

15. Precision is usually expressed in terms of
(A) Variance
(B) Standard deviation
(C) Sigma method
(D) RSD

Ans. D) RSD

Acid-Base and Non-aqueous Titrations MCQ

1. Which sentence is false about the Henderson-Hassel Balch equation
(A) It is used to determine the pKa value of X solutions
(B) the pH of solutions containing comparable and appreciable conc. of a conjugate acid-base pair to the ratio of their Concentrations
(C) It is used to calculate the valency of the molecule
(D) pH = PKA +log [conjugated base]/[conjugated acid]

Ans. C) It is used to calculate the valency of the molecule

2. Diazepam is Assay by which the method
(A) Acid-base titration
(B) Non-aqueous titration
(C) Karl Fischer titration
(D) NMR

Ans. B) Non-aqueous titration

3. An assay of boric acid is done by
(A) Direct titration (Alkalimetry)
(B) Direct titration (Acidimetry)
(C) A and B
(D) None of the above

Ans. A) Direct titration (Alkalimetry)

4. Which is an example of a Protophilic solvent
(A) H2S04
(B) KOH
(C) HAC
(D) Benzene

Ans. B) KOH

5. Which of the following salts has no water for Crystallization
(A) Blue vitriol
(B) Washing soda
(C) Baking soda
(D) Gypsum

Ans. C) Baking soda

6. Which indicator gives yellow colour in basic Medium
(A) Crystal violet
(B) Crystal violet
(C) Oracet Blue B
(D) Thymol blue

Ans. D) Thymol blue

7. What is the concentration of the sulphuric Acid solution, if 100 ml of the solution is neutralised by 50? ml of 0.5 M Ba(OH)2 solution
(A) 0.25 M
(B) 50 M
(C) 0.5 M
(D) 100 M

Ans. A) 0.25 M

8. Methyl orange is
(A) Pink in acidic medium, yellow in basic medium
(B) Yellow in acidic medium, pink in basic medium
(C) Colourless in acidic medium, pink in basic medium
(D) Pink in acidic medium, colourless in basic medium

Ans. A) Pink in acidic medium, yellow in basic medium

9. Which compound is Titration carried out By non-aqueous Titration
(A) Organic acids
(B) Organic bases
(C) A and B
(D) None of the above

Ans. C) A and B

10. How many percentages of acetic acid in or act Blue B
(A) 0.3% W/v
(B) 0.5 % w/v
(C) 0.2% w/v
(D) 0.1% w/V

Ans. B) 0.5 % w/v

11. Resonance Theory is
(A) The same colour of the same compound in acid and base medium is apparently due to the difference in the structure of the two forms
(B) The difference in the colour of the same compound in acid and base medium is apparently due to the same structure of the two forms
(C) The difference in the colour of the different compounds in acid and base medium is apparently due to the difference in
(D) None

Ans. D) None

12. How many w/v of methanol is present in Quinidine red
(A) 0.3
(B) 0.2
(C) 0.1
(D) 0.4

Ans. C) 0.1

13. Which of the following is used as an indicator In the titration of a weak acid and a strong Base
(A) Bromothymol blue (6 to 7.5)
(B) Methyl orange (3 to 4)
(C) Methyl red (5 to 6)
(D) Phenolphthalein (8 to 9.6)

Ans. D) Phenolphthalein (8 to 9.6)

14. Which of the following is a buffer solution
(A) H2SO4+ CuSO4
(B) CH3COOH +CH3CooNH4
(C) NaCl + NaOH
(D) CH3COONa + CH3COOH

Ans. D) CH3COONa + CH3COOH

15. Pilocarpine nitrate is Assay by which method
(A) Acid-base titration
(B) Non-aqueous titration
(C) Karl Fischer titration
(D) NMR

Ans. B) Non-aqueous titration

Different Types of Titrations MCQ

1. The compound was not assayed by Complex metric titration
(A) Magnesium trisilicate
(B) Sodium calcium edetate
(C) Calcium lactate
(D) Progesterone

Ans. B) Sodium calcium edetate

2. Mordant Black II indicator used in
(A) Complex metric titration
(B) Precipitation titration
(C) Non-aqueous titration
(D) Acid-base titration

Ans. A) Complex metric titration

3. Ammonium fluoride is a masking agent used for
(A) Aluminium
(B) Copper
(C) Iron
(D) Heavy metals

Ans. C) Iron

4. Which one of the following indicators is used in Complex metric titration
(A) Methyl orange
(B) Phenolphthalein
(C) Catechol violet
(D) Crystal violet

Ans. C) Catechol violet

5. Which sentence is false about the masking agent
(A) NH4F is a masking agent
(B) These reagents form complexes with interfering ions which are more stable than complexes with indicators & EDTA
(C) It is reagents which prevent interfering ions from reacting without physical separation
(D) This is a reagent which regains the ability of masked ion to enter the reaction with Ind and EDTA

Ans. C) It is reagents which prevent interfering ions from reacting without physical separation

6. Metal ions solution in a buffer is titrated with
(A) EDTA
(B) Non-aqueous solvent
(C) Water
(D) All of the above

Ans. D) All of the above

7. Which sentence is false about Complex metric titration
(A) It is formed natural molecule
(B) The anion is first precipitated with a metal cation in indirect titration
(C) The anion and natural molecule is
known as ligand
(D) It is used to study compound solubility

Ans. D) It is used to study compound solubility

8. Assay of Magnesium trisilicate is
(A) 0.05 M did. edetate
(B) 0.1 M did. edetate
(C) 0.01 M did. edetate
(D) 1 M did. edetate

Ans. A) 0.05 M did. edetate

9. If acidic solutions are used in the Mohr method
(A) Chromates ion is decreased
(B) Chromates ion is increased
(C) A and B
(D) None of the above

Ans. A) Chromates ion is decreased

10. Which analytical method is based on the Weight of the PPT
(A) Acid-base Titration
(B) Complex metric Titration
(C) Precipitation titration
(D) Gravimetry

Ans. D) Gravimetry

11. Which error gives always a Positive error
(A) Inclusion
(B) Mechanical Entrapment
(C) Surface adsorption
(D) Post precipitation

Ans. D) Post precipitation

12. If the solution is Basic 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

Ans. B) Silver hydroxide ppt formation is increased

13. Endpoint colour in the Mohr method is
(A) Red colour
(B) Blue colour
(C) Yellow colour
(D) Black colour

Ans. A) Red colour

14. Which is not the application of complex metric Titration
(A) Determination of the 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 barbiturates

Ans. D) To assay barbiturates

15. Impurity absorbed in the surface of the ppt is Called
(A) Inclusion
(B) Mechanical Entrapment
(C) Surface adsorption
(D) Post precipitation

Ans. C) Surface adsorption

Redox Titrations MCQ with Answers

1. The loss of hydrogen atoms by an element is Called
(A) Hydrogenation
(B) Oxidation
(C) Reduction
(D) Sublimation

Ans. B) Oxidation

2. Oxidation is also referred to as
(A) Combustion only
(B) Respiration only
(C) Transpiration
(D) Combustion and respiration

Ans. D) Combustion and respiration

3. Which of the following represents a redox Reaction
(A) NaOH+ HCl—–> NaCl+ H20
(B) BaCl2+ H2S04—–> Bas04+ 2HCI
(C) CuS04+ 2H20—–> Cu(OH)2 +H2S03
(D) Zn+2HCl——> ZnCl2 +H2

Ans. D) Zn+2HCl——> ZnCl2 +H2

4. Hydrogen (H2) is used for making
(A) Margarine only
(B) Ammonia only
(C) Salts
(D) Margarine and ammonia

Ans. D) Margarine and ammonia

5. Oxidation is the same as…
(A) Addition of hydrogen
(B) Removal of oxygen
(C) Addition of oxygen
(D) Removal of Nitrogen

Ans. C) Addition of oxygen

6. SnCl2+ 2FeCl2 —-> SnCl4+ 2FeCl2 is an example…..Of reaction
(A) Only oxidation
(B) Only reduction
(C) Redox
(D) Neither Oxidation nor reduction

Ans. C) Redox

7. A compound of Xe and F is found to have 53.5% of Xe. What is the oxidation number of Xe in this compound
(A) -4
(B) 0
(C) +4
(D) +6

Ans. D) +6

8. Which sentence is false about iodimetry
(A) Covers the titrations with a standardized solution of iodine
(B) Direct method
(C) Titrant is 12 and the analyte is a reducing agent
(D) Free 12 is converted to I ion with a reducing agent

Ans. C) Titrant is 12 and the analyte is a reducing agent

9. Which instrument is used to detect endPoint
(A) Potentiometer
(B) Conductometer
(C) A and B
(D) None of the above

Ans. C) A and B

10. Reduction involves in…. Oxidation Number
(A) Decrease
(B) Increase
(C) Independence
(D) Remain constant

Ans. A) Decrease

11. The process in which a substance gains Electrons is called
(A) Oxidation
(B) Hydrogenation
(C) Sublimation
(D) Reduction

Ans. D) Reduction

12. Oxidising agents do not include
(A) Potassium iodide
(B) Potassium manganate
(C) Potassium dichromate
(D) Bromine solutions

Ans. A) Potassium iodide

13. A reactant containing the Oxidized element is called
(A) Reducing agent
(B) Oxidizing agent
(C) Hydrogen
(D) Sublime

Ans. A) Reducing agent

14. The oxides of which of the following are Neutral
(A) Hydrogen
(B) Halogens
(C) Alkali metals
(D) All the above

Ans. A) Hydrogen

15. The removal of oxygen from a compound is an Example….
(A) Oxidation
(B) Reduction
(C) Oxygenation
(D) Dehydrogenation

Ans. B) Reduction

Electrochemical Methods of Analysis MCQ

1. The other name for dropping mercury electrodes is
(A) Macro electrode
(B) Reference electrode
(C) Microelectrode
(D) None of the above

Ans. C) Microelectrode

2. Biamperometry titrations are used to Determine
(A) Alcohol
(B) Water
(C) Ether
(D) Glycol

Ans. B) Water

3. An example of an indicator electrode is
(A) Hydrogen electrode
(B) Saturated calomel electrode
(C) Glass electrode
(D) Silver-Silver chloride electrode

Ans. C) Glass electrode

4. When the hydrogen electrode is dipped in a Standard acid solution it acts as
(A) Microelectrode
(B) Dropping mercuric electrode
(C) Reference electrode
(D) Indicator electrode

Ans. C) Reference electrode

5. The applied voltage can be changed by using
(A) Potentiometer wire
(B) Galvanometer wire
(C) Ammeter wire
(D) Current wire

Ans. A) Potentiometer wire

6. Which of the following electrodes can be used over a wide pH range
(A) Hydrogen electrode
(B) Glass electrode
(C) Saturated calomel electrode
(D) Silver- Silver chloride electrode

Ans. A) Hydrogen electrode

7. From the current-voltage curve, we get Information regarding
(A) Electrolyte of the solution
(B) Nature of the material
(C) Concentration of the material
(D) Both b & c

Ans. D) Both b & c

8. Conductivity is inversely proportional to Which parameter
(A) Potential
(B) Current
(C) Voltage
(D) Resistance

Ans. D) Resistance

9. The potential of the metal electrode is measured At a temperature of
(A) 25°c
(B) 35°c
(C) 45°c
(D) 65°c

Ans. A) 25°c

10. Antimony electrode is an example for
(A) Reference electrode
(B) Indicator electrode
(C) Residual electrode
(D) Kinetic electrode

Ans. D) Kinetic electrode

11. The size of the capillary in the DME is
(A) 20-30 g
(B) 20-50 g
(C) 20-60 g
(D) 20-40 g

Ans. B) 20-50 g

12. The mercury drop has which charge
(A) Positive charge
(B) Negative charge
(C) Neutral charge
(D) None of the above

Ans. B) Negative charge

13. Silver- Silver chloride electrode is an example for
(A) Reference electrode
(B) Indicator electrode
(C) Dropping mercuric electrode
(D) None of the above

Ans. A) Reference electrode

14. In the current-voltage graph which of the following is not present
(A) Residual current
(B) Migration Current
(C) Diffusion current
(D) Potential current

Ans. D) Potential current

15. The drop formation can be minimized by using which device
(A) High-capacity condenser
(B) Galvanometer
(C) Shunt
(D) Potentiometer

Ans. A) High-capacity condenser

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