Analytical Chemistry Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Analytical Chemistry Interview Questions

Questions Answers Views Company eMail

WHY pKa value is more important than pH value of the mobile phase in HPLC?

1719

Many times I don't got a caffeine peak in calibration of hplc using guard column ❓

1747

For standardization of volumetric solutions, acceptance limit for concentration is considered as 10% of nominal concentration and %RSD as NMT 0.2% (for appropriate no. of replicates). But , if %RSD has not met, what should be further action?

1843

In Assy by potentio metry titration method how select MET U ,DET U, SET U,

2082

in sampling of raw material which side is pasted sampled labels

1783

why holium oxide prepared in 10% HCLO4 SOLUTION

1412

Why 162 mg NaOH used for 1N volumetric solution in 150 ml water then 54.5 ml diluted with 1000 ml

1843

What is the importance of rrf in rs by HPLC?

1 3142

Why use only methanol,used determinationof moisture content not use other solvents

1362

please explain about aluminium hydroxide assay

1094

How to know the estimated LOQ concentration in ppm

1160

What is the difference between c8 and c18 hplc column?

1 2013

Why karl fisher factor is 5 ?

1 2063

Loss of linearity in tkn analysis, possible reasons?

1258

In rs method development when we are going area normalization method to dilute standard method?

1477

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Un-Answered Questions { Analytical Chemistry }

What is viod volume and peak purity in HPLC?

2820

which batch require to use for analytical method validation?

749

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

2614

what is the purge flow & how to calculate

2569

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?

1724

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

2193

effect of pore size, pore volume, partical size, column length, carbon load on retention time? what is carbon load? what is the use?

858

How to establish relative response factor for hplc. Why it is required?

1153

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

2834

in hplc chromatogram started from left to right and in uv spectrum started from left to right

894

what is diffrence between specificity and selecivity?

717

why digestion require in icpms?

732

how to set sample and standard concentration in RS method?

841

How to do regeneration of Metacarb Pb plus column?

2523

what is the importance of peak purity in HPLC and how we can calculate through manul(not software)?

4428

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