Analytical Chemistry Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Analytical Chemistry Interview Questions

Questions Answers Views Company eMail

When i inject amines and acid on HPLC then which peak will elut first?

Sun Pharma,

4 13394

In pharmacopeal solibility parameter of a material, is et essential to test all paramete? If 70-75% parameter passes can we assess that the material is satisfactory or not?

Aurobindo,

1 5328

Why triethylamine and o-phosphoric acid used while setting pH of mobile phase during HPLC Analysis?

Hapten Healthcare, Pharmaceutical,

6 33604

why RID detector is used for selective materials like Mannitol, Hydroxyethyl Starch and Sorbitol?

5 12457

for which type of applications gas chromatography is used?

2 6673

for which type of applications gas chromatography is used?

2 6453

for which type of applications gas chromatography is used?

Cipla, Flamingo Pharmaceuticals,

5 11373

wat is reverse phase in hplc

2 8822

For Dissolution test why we are Performing 6 Bowls why not more.any were mentioned or in what basis we are performing? --------Veerabhadrarao.M

Lee Pharma, Micro Labs,

2 12136

In Number of Theoretical Plates (N) = 16 (tr/w)2. where tr: retention time, and W: peak width. My Question is here in formula what is 16.Can u explain briefly? ---Veerabhadrarao.M

Micro Labs, Richter Themis, Sun Pharma,

3 19439

how to Calibrate FID IN GC

1 7362

what is assay in hplc

3 11727

how calibrate the hplc detector

Cipla, Shraddha Analytical Services,

2 10627

why we use deturium lamp in uv spctrophotometer other than lamps

1 9962

A new drug substance found fail to meet specification for an unknown Impurity during stability study(Specific change),how would further proceed?

2 7342

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Un-Answered Questions { Analytical Chemistry }

What is dose dumping? why require to do?

880

what is the acceptance criteria for enteric coated tablets in 0.1n hcl validation in each parameter?

851

What is the diffrence in japan mkt requirement in analytical method validation over US?

685

How to know the estimated LOQ concentration in ppm

1165

What is diffrence between extractable volume and deliverable volume? Answer pls

4501

how can give the expiry period and restadardisation of volumetric solution

2541

What is related substance by HPLC impurity limits as per USP?

1047

what is biorelivent dissolution media?

753

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

2610

If vendor having more imp than monograph then how to proceed? and how to set spec?

860

can i use hplc detector to uplc and why?

2241

What are the primary considerations in extractables and Leachables ?

2220

how to set sample and standard concentration in RS method?

848

1.What is the difference between method validation and method verification 2.Which guidelines proposed to method transfer

1806

What is shaking level in GC?

748

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