Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

What is mean by peak tailing in case of GC?

5 10660

why we are taking 85 ml of concentrated HCl to prepare 1N Solution

SG Phyto Pharma,

4 102101

What is diffrence between residue on ignition and sulphated ash?

Zydus Cadila, Cadila, Piramal Healthcare, Panas Pharmaceuticals, Remidex, Aurobindo, Dr Reddys, Mylan,

37 145363




how can standardized of HCl of 0.1 N

7 37389

What is the difference b/w OVI Solvents and Residual Solvents in case of Gas Chromatogaphy and What is its Detection Limit?

Jubilant Organosys, Suven Life Sciences,

8 28971

what is the diffrence between absorbance and absorption in the beer,s lamber formula ?

2 7915

one gram of which below elements has the most atoms in its? a) H b) D C)T D) He

4 3728

0.1 atom gram of the unknown element( X)reacts with 2.4 gram of O2 to produce the oxid product . can you tell us, what is the oxid formula ? a) XO b)X2O3 c)XO2 D) X2O4

Ajanta,

1 1888




Why we use Uracil for HPLC calibration in Detector wave ength accuracy test?

5 18892

k.f principle in finding out moisture content

1 10755

What is difference btw UV detector & RID detector

4 14029

What's the importance of these procedures?

1 3002

How precise should be the linearity in HPLC method validation?

Glenmark,

3 7281

what should be the precision during technology transfer?

Glenmark,

3 5788

why we use vanillin in melting range calibration

3 9341


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Un-Answered Questions { Analytical Chemistry }

what is the importence and role of LCMS and LCMS/MS and their applications? which type of compounds are analysis by lcms?

2278


in gas chromatography what is the difference between gas flow rate and average linear velocity ?

991


how to get accurate result for Residue on evaporation in purified water

258


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

1444


In Dissolution Test why limit is define Q+5% what is the role of +5%.

1419






What is AV value in test uniformity content ,describe calculation

129


How to choose concentration of LOQ solutions for RS analysis? Example.

735


What is the calibration of uv process and preparation

672


1.What is the difference between method validation and method verification 2.Which guidelines proposed to method transfer

213


in dissolution why pool sample needed? in which type of drug pool sample need?

1809


What are the primary considerations in extractables and Leachables ?

991


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

963


What is the exact reason to use THF and IPA in buffers of Reverse phase HPLC as a solvent?

2472


explain 5 components of gas chromatography ?

638


What is viod volume and peak purity in HPLC?

1329