Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

what is rs test why we are perfoming rs test

2 6188

In GC calibration,what is the procedure to calibrate the TCD (thermal counductivity detector)suggest ?

Orchid,

1985

What is difference between silica used in TLC and HPLC column

Cipla, Meghmani Organics,

4 13975




Why Urasil and Caffeine use for HPLC wavelength accuracy calibration. which is most suitable, Why? other than these which can be used?

Cipla,

7 12901

When we r doing processing method for sst in Empower software by HPLC, What value has to give in void volume and as per which pharmacopia!

Micro Labs, Mylan,

4 9611

what is use of acetonitrile compare to methanol in RP-HPLC Method devlopment

Orchid, Neuland,

7 17342

is a bonded water molecule in an organic material can be easlisy and accuractly determined by KF rather than LOD

2 4958

How to know HPLC column performance?

Meghmani Organics,

4 8701




What is heavy water

Meghmani Organics,

2 5807

What will be the effect on HPLC analysis result if three mobile phases given separately through three valves and same proportion mixed together and given by one valve?

LOIL,

1 3114

Which products will produce when acetic anhydride reacts with Ter-butanol, Sec-butanol, Iso butanol, Dimethylamine etc.

1525

Why PH range from 0to14.

Reddy Labs, College School Exams Tests, Wings Customer Care,

2 10545

why you are using benzoic acid for water content determination in TEA

2 5260

difference between instrumenent and equipment

6 8903

mixed 1.0 ml of methanol and 1.0 ml of toluene and injected in gas chromatography.will you prove that both solvents are in the ratio 1:1(not by area normalization)

1 1653


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Un-Answered Questions { Analytical Chemistry }

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

2661


all types of questions asked at the cipla interview

3428


In HPLC (Waters) software Empower1,2 &3 what is the updation for each version

1506


we are performed SOR for a particular product the limit is -6 to -10.We face particular bathes it is not meeting the specification.we performed diffrent instrument diffrent analyst we are getting diffrent diffrent results.solvent is dimethyl sulfoxide what could be the reasion

542


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

1192






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

2180


In Assy by potentio metry titration method how select MET U ,DET U, SET U,

15


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

2285


In dissolution of tablets/capsules elaborate the Dissolution limit 20.0% to 60% Q in 30 minutes.

800


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

1261


AT WHAT CONDITIONS WILL YOU ANALYSE A SAMPLE,WHICH ARE PRESERVED AT OTHER THAN THE AMBIENT CONDITIONS?(ie COLD STORAGE SAMPLES BELOW 20* CENTIGRADE?

913


How can we calculate "confidence interval" in analytical method validation? Pl. explain with example.

2551


Why dissolution test is not performed in all of the products

1258


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.

1095


what is definition of validation? which components are followed give detail?

974