Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

How you collect dissolution media while in stirring condition of a basket or a paddle?

Mylan,

2 2860

At what distance the sample is collected in dissolution basket?

3 5471

why we use prednisone tablet in chemical callibration of dissolution apparatus?

Cipla, Mylan, Umedica Laboratories,

6 27640




Why Ethanol is Used for Standardization of GC Head space?

Cipla, Sun Pharma, Hetero, Finar Chemicals, Anuh Pharma,

2536

How much area of methanol or other solvent are acceptable in blank (Diluent) of Gas chromatography.

2 5760

As per OOT for any product what is calculation and how to invetigate the OOT

Hetero, Aurobindo,

2 8518

What is Spliit and Splitless in Gas Chromatography nad How does it work?

Sterling,

4 7101

Why used 0.02% v/v solution of toluene in hexane for calibration of UV.

3 7868




Why 1.2% KCl is used for limit of stray light? and why limit of stray light is required in UV calibration?

Ranbaxy, Lupin,

5 30904

How to decided test concentration in GC analysis.

3 4437

What is the formula to determine the concentration of M of a solution given the % transmittance? Use %T = 43.7 as an example.

1215

in calibration of disintegration test apparatus why cycle limit is 28-32?

Caplin Point,

1 8656

Why pH range is maximum 14.0

UPL,

6 20653

what is the structure of DOWEX-50

3493

What is the difference between Normal phase method & Reverse method in HPLC ? Define application of both method.

4 15067


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Un-Answered Questions { Analytical Chemistry }

4. Describe the operation of the Craig apparatus. Chapter.3 Equilibrium Processes in Separations

1175


wat is the role of michelson interferometer in FTIR and He-Ne lase.detailed answer required in simple language

992


Why a1% value is used for some product ? What is the criteria for selection a1% value ?

849


what is the origin to prepare standard operating procedure

881


some product having water content method with pyridine and ethylene glycol mixture instead of methanol? how they are selecting and methanol is not suitable solvent how ?

1075






In HPLC calibration, caffeine is used as primary standard for wave length calibration due to caffeine is having dual maxima at 273 & 205 nm and one minima at 245 nm. Any body can give reference of these details from any pharmacopeia (with chapter no.) or any other authentic guideline?

227


What is viod volume and peak purity in HPLC?

1254


WHAT IS THE PURPOSE WE USE HCL, CHOPPER, BURNER, MONOCHROMATOR in AAS? PLEASE EXPLAIN BRIEFLY

969


for heavy metal test lead used in which form pure form or any other form for preparation of lead standard sol

3426


what is peak purity and its formula

112


why we use a particular hplc column for a particular compound give reasons?please

1417


What is the difference between Discriminating media and DPDM(Dissolution Profile with Different Media)

4988


How will u perform degradation study in detectors other thann PDA in HPLC Methodology

1165


What is the principle of Thermal conductivity detector and FID?

1315


How can the GC or HPLC method is selected to determine the impurity profile in drug product?

5248