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 8803

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 3102

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

Hapten Healthcare, Pharmaceutical,

6 21598




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

5 7041

for which type of applications gas chromatography is used?

2 3904

for which type of applications gas chromatography is used?

2 3888

for which type of applications gas chromatography is used?

Cipla, Flamingo Pharmaceuticals,

5 7108

wat is reverse phase in hplc

2 5922




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 8202

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

Sun Pharma, Micro Labs, Richter Themis,

3 13521

how to Calibrate FID IN GC

1 4902

what is assay in hplc

3 7611

how calibrate the hplc detector

Cipla, Shraddha Analytical Services,

2 7590

why we use deturium lamp in uv spctrophotometer other than lamps

1 7334

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

2 4406


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Un-Answered Questions { Analytical Chemistry }

what is the importence and role of LCMS and LCMS/MS and their applications? which type of compounds are analysis by lcms?

2278


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

926


how the compound separate in coulunm,explain

1000


How to decide assay range for non pharmacopeial API analysis by HPLC? Could you give me any reference for same e.g Guidelines or Paper publications?

1843


what is the disso medium for tropsiun chloride

884






WHAT IS DIFFERENCE B/W MALTINGRANG/DSC

1140


how will you do the prep for unstable componds?

645


what are the standard methods for HPLC?

1483


What is AV value in test uniformity content ,describe calculation

129


from where i get mortar pastle for glass bottle crush? it's required for testing of it?

884


why does used dry caffien in HPLC calibration?

564


what is %labelled amount in content uniformity of dosage unit and its calculation?

3558


What is control room temperature and which guide line says?

330


In Dissolution Test why limit is define Q+5% what is the role of +5%.

1419


HI,I CLEARED BOB CLERK EXAM. MY INTERVIEW WILL BE ON 9TH OCTOBER,2010.PLEASE SEND ME INTERVIEW QUESTIONS AND ANSWERS. THANK YOU.

960