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?

1769

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

1820

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?

1908

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

2172

in sampling of raw material which side is pasted sampled labels

1838

why holium oxide prepared in 10% HCLO4 SOLUTION

1462

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

1918

What is the importance of rrf in rs by HPLC?

1 3226

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

1408

please explain about aluminium hydroxide assay

1132

How to know the estimated LOQ concentration in ppm

1214

What is the difference between c8 and c18 hplc column?

1 2145

Why karl fisher factor is 5 ?

1 2159

Loss of linearity in tkn analysis, possible reasons?

1319

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

1524

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Un-Answered Questions { Analytical Chemistry }

what is the principle involved in turbidometry and nephelometry ?

4159

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

2032

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

2666

How to start the dissolution development for unknown tab?

1680

Ratio of Water and Acetonitrile(diluent) is not recommended to use in cleaning method validation,why?

2964

What is a difference between potency and purity?

1221

how to select short coloum and long coloumn for new molecule

2452

iam usig ph buffers merk. manually how to prepare ?

2278

How do we get end points and how many end points are possible for citric acid and di-acid not theorotically answer should be given practically.

2584

USP methodology, EP methodology, IP methodology, among three if possible to use one methodology for qualify working standard to use USP, EP, IP ? Please explain...

2015

what is mean by 40 in the dissolution basket mesh size?

787

How to calculate coreletion coefficient

1713

what is third integration

1976

How to fix the sample conc. in Related substances test by HPLC?

1097

how decide the clining method and cleaning method validation require for this perticular products?

755

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