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 9056

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 3246

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

Hapten Healthcare, Pharmaceutical,

6 22815




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

5 7356

for which type of applications gas chromatography is used?

2 4090

for which type of applications gas chromatography is used?

2 4069

for which type of applications gas chromatography is used?

Cipla, Flamingo Pharmaceuticals,

5 7349

wat is reverse phase in hplc

2 6177




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 8594

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 13996

how to Calibrate FID IN GC

1 5112

what is assay in hplc

3 7975

how calibrate the hplc detector

Cipla, Shraddha Analytical Services,

2 7826

why we use deturium lamp in uv spctrophotometer other than lamps

1 7624

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

2 4657


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Un-Answered Questions { Analytical Chemistry }

How to choose concentration of LOQ solutions for RS analysis? Example.

862


what is the disso medium for tropsiun chloride

987


What is the purpose of octyl silane columns?

2814


what is partion and column chromatography

1102


WHY given much noise PDA dector then VWD Dector

743






how you determine moist.of NaOH sol or NaOH flacks

1111


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

974


what is the structure of DOWEX-50

3815


What is viod volume and peak purity in HPLC?

1473


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

1130


What is control room temperature and which guide line says?

423


Tell me about analytical method validation in QC

2245


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

1073


How to determine water content of bis tetrazole amine mono ammonium salt

2060


how will you do the prep for unstable componds?

727