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 3078

At what distance the sample is collected in dissolution basket?

3 5648

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

Cipla, Mylan, Umedica Laboratories,

6 28789




Why Ethanol is Used for Standardization of GC Head space?

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

2595

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

2 5953

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

Hetero, Aurobindo,

3 8939

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

Sterling,

4 7336

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

3 8302




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 32938

How to decided test concentration in GC analysis.

3 4592

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

1288

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

Caplin Point,

1 9122

Why pH range is maximum 14.0

UPL,

6 21467

what is the structure of DOWEX-50

3648

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

4 15659


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Un-Answered Questions { Analytical Chemistry }

why are measure gas flow " ml " in Gas chromatography

333


what is the disso medium for tropsiun chloride

882


What are modes of quantification in related substances

869


sop of a uv visible spectrophotometer double beam elico model

4122


Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?

1280






How we performed the force degradation for drug substance, is any specific guideline is available for each parameter(Acidic, basic, oxidation,heat)? what conditions you mentained for above parameters.

1002


A ha tc is actual defination of retention time?

206


what is the extinction coefficient for Indomethacin or at 319nm wave length.

2531


what type of question will ask in the interview of lab chemist.

2077


How can we confirm the HPLC column is end-capped or not? Is it possible to identify by physical appearance?

1821


what is lod and loq ?,why use k2cr2o7 , kcl h2so4 in uv calibration ?,why use benzophenone & caffene acetone in hplc calibration ?,what is leading peak in hplc ?why we do the calibration of limit of stry light in hplc & uv ?

2087


why 6 tablets use for dissolution

1854


what parameters we will consider while developing a HPLC method and how we confirm our HPLC method is valid?

2178


why equlirium conatant of water have 14 value

896


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

1045