Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

what is rs test why we are perfoming rs test

2 5949

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

Orchid,

1914

What is difference between silica used in TLC and HPLC column

Cipla, Meghmani Organics,

4 13512




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

Cipla,

7 12493

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 9205

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

Orchid, Neuland,

7 16668

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

2 4797

How to know HPLC column performance?

Meghmani Organics,

4 8343




What is heavy water

Meghmani Organics,

2 5620

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 2925

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

1406

Why PH range from 0to14.

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

2 10085

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

2 5079

difference between instrumenent and equipment

6 8565

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 1508


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Un-Answered Questions { Analytical Chemistry }

How will u perform degradation study in detectors other thann PDA in HPLC Methodology

1220


Why irmoisture balance is used for corrugated box moisture testing

1038


can we use the same detector in HPLC as well GC and what could be the differences we can find in the final chromato graph in any aspects?

897


how to calculate corelation coefficient in G.C Calibration? what is the calculation part?

963


How would you decide dissolution medium for NCE compound of class I drug

705






how to selecet an exact coloumn for an new molecule development by hplc how to select exact salt as buffer for new molecule development by hplc what is the the process to select the mode of saparation of compoundes by hplc what is the use of ph of buffer what is use of buffer,ph,organic phase,ans methods how the molecules get saparated in coloumn,

1119


What is the diference between residual solvents and organic volatile matter

661


how much mass should be there in volumetric flask while in preparation of sample for assay? 

1138


for heavy metal test lead used in which form pure form or any other form for preparation of lead standard sol

3557


Why perchloric acid used for potentiometric titration

848


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

942


How to determine the EDTA content by potentiometry titration in Ceftriaxine sodium

1082


cefoperozone and sulbactam inj. hplc test method

1248


How can I develope method of dissolution by HPLC OR UV

954


How to calculation of residual solvent methanol (3000 ppm) standard solution, and how many quantity used of test sample

1023