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 20116

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

GVK,

2 10290

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

2 8248




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

Cipla, Torrent Power, Cypher Solutions,

1 5137

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

JBCPL,

2 6892

Why KBr pellet is used in IR?

Glochem,

11 17961

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

9 9105

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

Orchid,

5 20046




Why Peak Purity is not determined in GC analysis?

GVK, GSFC,

1 3595

Why sodium lamp is used in polarimeter?

Aurobindo, Micro Labs,

1 10212

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,

928

What is the difference between Primay and Secondry Standard ?

Neuland, College School Exams Tests,

6 43789

priciple of gc & hplc? (properly describe)

Cadila, Reddy Labs, Cipla,

2 11449

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

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

1 4142

give tha clarity about peak purity concept

Aurobindo, Reliance Life Sciences,

3 7679


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Un-Answered Questions { Analytical Chemistry }

what is separation techniques.

1300


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

2495


Basic principle of ESI?

787


How much is the standard area for glc analysis

885


What is third generation HPLC Columns?

637






How they found 1mL of K.F reagent is equivalent to 5mg of water and if we change the composition of K.F reagent, is it can neutralize more amount of water?

268


what is peak purity and its formula

143


Why irmoisture balance is used for corrugated box moisture testing

996


Describe your field experience sample type collected,sample techniques,field measurements taken and equipment used?

1402


why we should take dst factor for below 1%moisture samples

1343


What is column in chromatography?

749


about method developement in hplc

348


What is the principle of HPLC, GC, LCMS, GCMS,LC QQQ, GC QQQ, LC Q TOF and GC Q TOF. What are the applications and Specificity?

5575


What is importance of pH in the Heavy metal test and How it effect on the test results?

894


Please tell me about the pH of Polycaboxylic ether is it in the 5-6 range ever or more than 6

1267