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 21068

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

GVK,

2 10705

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

2 8621




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

Cipla, Torrent Power, Cypher Solutions,

1 5298

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

JBCPL,

2 7190

Why KBr pellet is used in IR?

Glochem,

11 18537

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

9 9541

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

Orchid,

5 20770




Why Peak Purity is not determined in GC analysis?

GVK, GSFC,

1 3869

Why sodium lamp is used in polarimeter?

Aurobindo, Micro Labs, Mylan,

1 10889

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,

1015

What is the difference between Primay and Secondry Standard ?

Neuland, College School Exams Tests,

6 44828

priciple of gc & hplc? (properly describe)

Cadila, Reddy Labs, Cipla,

2 11875

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

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

1 4557

give tha clarity about peak purity concept

Aurobindo, Reliance Life Sciences,

3 7952


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Un-Answered Questions { Analytical Chemistry }

if you have given a blank water how you analyse by general analytical techniques?

747


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

805


In HPLC calibration, caffeine is used as primary standard for wave length calibration due to caffeine is having dual maxima at 273 & 205 nm and one minima at 245 nm. Any body can give reference of these details from any pharmacopeia (with chapter no.) or any other authentic guideline?

332


In performance Check of GC Why Hexadecane Peak is Considered 

1799


How to start the dissolution development for unknown tab?

327






What is column in chromatography?

831


Why potassium dichromate is used in calibration of uv?

338


function of detecter in hplc ,gc and spectroscopy? function of carrier gas in gc?

1228


4. Describe the operation of the Craig apparatus. Chapter.3 Equilibrium Processes in Separations

1311


process of Diclofenac sodium,IP.

906


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

1142


What is viod volume and peak purity in HPLC?

1392


what is the procedure for cleaning of lenses of hatr accesory of ftir instrument?

1086


why are measure gas flow " ml " in Gas chromatography

398


iam usig ph buffers merk. manually how to prepare ?

1010