Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

Why potassium hydrogen pthalate is used for perchloric acid And naoh. Why it is used for both acid and base

Vijayasri Chemicals,

6 21285

what are the normalisation, internal standard and external standerd methods in HPLC.

GVK,

2 10812

is ther any guidline is available for limt of peak fronting.and what is the limt of peak fronting.

2 8711




how would you determine the acceptance criteria for cleaning validationof product A for product B?

Cipla, Torrent Power, Cypher Solutions,

1 5339

How can we konw that the HPLC column is endcapped? Is it possible to identify visually without COA?

JBCPL,

2 7243

Why KBr pellet is used in IR?

Glochem,

11 18710

IN DISSOLUTION S1 STAGE 1 BOWL GOT 52%(Q POINT IS 80%)WHAT WE HAVE DO

9 9674

what is the meaning of PURITY AND POTENCY .what is the difference between PURITY and POTENCY

Orchid,

5 20964




Why Peak Purity is not determined in GC analysis?

GVK, GSFC,

1 3940

Why sodium lamp is used in polarimeter?

Aurobindo, Micro Labs, Mylan,

1 11037

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

Bank of Baroda,

1049

What is the difference between Primay and Secondry Standard ?

Neuland, College School Exams Tests,

6 45013

priciple of gc & hplc? (properly describe)

Cadila, Cipla, Reddy Labs,

2 11961

why we have to store the pH electrode in 4.01 buffer ?

Aurobindo, Cipla, SGS, Indoco Remedies, BioSynth, BioMax,

1 4634

give tha clarity about peak purity concept

Aurobindo, Reliance Life Sciences,

3 8015


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Un-Answered Questions { Analytical Chemistry }

how can give the expiry period and restadardisation of volumetric solution

1346


Identify problem faced when mass spectroscopy is used with HPLC system ?

734


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 ?

2192


why should we perform dissolution PVT calibration only by UV spectrometer, not by HPLC ?

415




1102






What is the difference between purge septum flow and column flow in gas chromatography?

839


cefoperozone and sulbactam inj. hplc test method

1322


What is method validation in quality control

2455


what type of questions asked on analytical balance and also give answers................all pharma companies?

6419


How to choose the which salt is suitable for mobilephase

1747


Colorimtry

276


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

782


why we are using benzene, anyline in acetic anhdride assay titration method?

872


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

2627


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

1019