Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

what is rs test why we are perfoming rs test

2 6067

In GC calibration,what is the procedure to calibrate the TCD (thermal counductivity detector)suggest ?

Orchid,

1954

What is difference between silica used in TLC and HPLC column

Cipla, Meghmani Organics,

4 13766




Why Urasil and Caffeine use for HPLC wavelength accuracy calibration. which is most suitable, Why? other than these which can be used?

Cipla,

7 12690

When we r doing processing method for sst in Empower software by HPLC, What value has to give in void volume and as per which pharmacopia!

Micro Labs, Mylan,

4 9432

what is use of acetonitrile compare to methanol in RP-HPLC Method devlopment

Orchid, Neuland,

7 17015

is a bonded water molecule in an organic material can be easlisy and accuractly determined by KF rather than LOD

2 4884

How to know HPLC column performance?

Meghmani Organics,

4 8533




What is heavy water

Meghmani Organics,

2 5715

What will be the effect on HPLC analysis result if three mobile phases given separately through three valves and same proportion mixed together and given by one valve?

LOIL,

1 3038

Which products will produce when acetic anhydride reacts with Ter-butanol, Sec-butanol, Iso butanol, Dimethylamine etc.

1447

Why PH range from 0to14.

Reddy Labs, College School Exams Tests, Wings Customer Care,

2 10325

why you are using benzoic acid for water content determination in TEA

2 5180

difference between instrumenent and equipment

6 8755

mixed 1.0 ml of methanol and 1.0 ml of toluene and injected in gas chromatography.will you prove that both solvents are in the ratio 1:1(not by area normalization)

1 1588


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Un-Answered Questions { Analytical Chemistry }

Which is the highly polar and highly non polar column in HPLC?

831


If we do accuracy at same concentration at which linearity planned,what is the need to do linearity separately?

990


Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...

296


How to choose the which salt is suitable for mobilephase

1715


What is gelatinization?

415






Principle of single pan analytical balance

3712


How can we calculate offset value pH measurment

234


WHY given much noise PDA dector then VWD Dector

697


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

704


in dissolution in one tablets two molecule one is losartan & second is HCTZ losartam is complies in s1 stage & hctz is complies in s2 stage then how to report result losartan s1 stage result or losartan s2 stage result

930


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

1013


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

1353


Why potassium dichromate was using in Uv calibration?

517


We use hicrome 10 cxs column in hplc analysis....pls tell me.. what is the meaning of 10 cxs?

298


what is partion and column chromatography

1059