Pharmaceutical Analysis Unit -4 MCQs

Pharmaceutical Analysis Unit -4 MCQs with Answers

1.Which of the following expression is correct for half wave potential

E1/2 = E°+0.0590/n log [Dox/Dred]1/2

E1/2 = E°+0.0591/n log [Dred/Dox]1/2

E1/2 = E°+0.0591 /n log [Dred /Dox]2/3

E1/2 = E°+0.0691 /n log [Dred/Dox]1/2

SOLUTION

E1/2 = E°+0.0591/n log [Dred/Dox]1/2

 

2.Conductometry is the measurement of

Conductivity of the solution

EMF of the solution

Current across the solution

Voltage across the solution

SOLUTION

Conductivity of the solution

 

3.Ilkovic equation is used for which purpose

Qualitative purpose

Quantitative purpose

Both a & b

None of the above

SOLUTION

Quantitative purpose

 

4.The oxidation no. of Cr in K2Cr2O7 is

+6

+7

+5

+4

SOLUTION

+6

 

5.The electrochemical method which is used to measure electro motive force is called as

Amperometry

Conductometry

Polarography

Potentiometry

SOLUTION

Potentiometry

 

6.Polarography is developed by which of the following scientist

Hull

Jaroslav heyrovsky

Schiebold

Einstein

SOLUTION

Jaroslav heyrovsky

 

7.Precision is usually expressed in terms of

Variance

Standard deviation

Sigma method

RSD

SOLUTION

RSD

 

8.EDTA method of calculating hardness of H₂0 can be help to detamine

All types of hardness

Temporary hardness only

Permament hardness only

Alkaline hardness only

SOLUTION

All types of hardness

 

9.In Gas-liquid phase chromatography, the stationary phase is composed of _____ or the mobile stage is made of _____

Solid, liquid

Liquid, liquid

Liquid, gas

Solid, gas

SOLUTION

Liquid, gas

 

10.The precision under the selfsame operating conditions over a short interval of time is known as

Reproducibility

Intermediate precision

Repeatability

Robustness

SOLUTION

Repeatability

 

11.The number of moles of a solute per liter of a solution is

Molality

Normality

Molarity

None

SOLUTION

Molarity

 

 

12.Which one always acts as oxidizing agent

HNO3

MnO2

H2O2

SO2

SOLUTION

HNO3

 

13.following Which procedure is used for the Limit test for arsenic

Gutzeit method

Oswald method

Arrhenius method

Karl-Fischer method

SOLUTION

Gutzeit method

 

14.Which not be used as adsorbent in Column adsorption chromatography

Magnesium oxide

Silica gel

Activated alumina

Potassium permanganate

SOLUTION

Potassium permanganate

 

15.In which of the following classes of paper, chromatography does the mobile phase pass horizontally over a circular sheet of paper?

Ascending paper chromatography.

Descending paper chromatography.

Radial paper chromatography.

Ascending – descending chromatography.

SOLUTION

Radial paper chromatography

 

16.The closeness of agreement betwixt a series of calculation obtained from multiple sampling of the homogenous sample is

Accuracy

Precision

Ruggedness

Robustness

SOLUTION

Precision

 

17.The equivalent weight of NaoH is

36

20

40

13

SOLUTION

40