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 5249

At what distance the sample is collected in dissolution basket?

3 7922

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

Cipla, Mylan, Umedica Laboratories,

6 34846

Why Ethanol is Used for Standardization of GC Head space?

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

3695

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

2 7976

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

Aurobindo, Hetero,

3 14804

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

Sterling,

4 10643

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

3 12763

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

Lupin, Ranbaxy,

5 49914

How to decided test concentration in GC analysis.

3 6745

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

2092

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

Caplin Point,

2 11974

Why pH range is maximum 14.0

UPL,

6 27096

what is the structure of DOWEX-50

4891

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

4 19516


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Un-Answered Questions { Analytical Chemistry }

What is rs test why we are performing rs test?

1276


What is intact assay method development.....?

1984


Why Ethanol is Used for Standardization of GC Head space?

3695


How do we fix the sample concentaryion in hplc method development. What is the basis?

648


Why sodium hydroxide used for maintain pH of phosphate buffer

1803






[3/30, 13:29] Manoj P Venkatpurwar: How hplc column selection according to structure? How mobile phase buffer selection on molecule structure?

280


in stress study if your api not soluble in hcl naoh h2o2 then what require to do?

290


how you determine moist.of NaOH sol or NaOH flacks

1753


why we are using hexane in calibration of number of drop per mL

1144


How can I develope method of dissolution by HPLC OR UV

1869


why lactose has less charges when packed in steel containers when compared with packing of lactose in polyamide material?

1732


what is the origin to prepare standard operating procedure

1766


How to calculation of residual solvent methanol (3000 ppm) standard solution, and how many quantity used of test sample

2489


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

2248


which batch require to use for analytical method validation?

301