Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

how to prepare solution in ppb

6 14149

how to prepare low ppm solution from high ppm solution ?

1 7716

wt is difference between assay and purity in hplc?

Hetero, IDRS Labs,

9 72646




difference between AAS & flame photo meter ?

3 31414

how to calibrate AAS ? give me the procedure?

3 11947

why peak purity not considered in GC?

DRL, Reddy Labs, Vimta Labs,

4 12431

from compund pka value how to select buffer and column?

Emcure, Zydus Cadila,

2 6936

what is Beer Lambert low ?

MAN,

8 11715




principle of AAS & its uses ?

Auriga,

1 3257

how ir specrometer is calibrated ?

1 4184

what is pKa ?

Dr Reddys, Shasun Chemicals,

10 14365

How you can calculate pKa ?

Dr Reddys,

6 13173

what buffer you can select for acidic nature analyte and how ?

Dr Reddys,

2 10816

What is Specificity ?

Dr Reddys,

8 10527

Whya the need of Specificity to do in Analytical Method Validation ?

Dr Reddys,

5 11183


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Un-Answered Questions { Analytical Chemistry }

from where i get mortar pastle for glass bottle crush? it's required for testing of it?

956


what is lod and loq ?,why use k2cr2o7 , kcl h2so4 in uv calibration ?,why use benzophenone & caffene acetone in hplc calibration ?,what is leading peak in hplc ?why we do the calibration of limit of stry light in hplc & uv ?

2226


all types of questions asked at the cipla interview

3429


what parameters we will consider while developing a HPLC method and how we confirm our HPLC method is valid?

2286


While performing TOC sst analysis Zero shift disabled & sample analysis zero shift enabled why?

1133






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

885


give clarity of linearity and range in method validation

1022


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,

1190


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

1396


what is the limit for KF Factor ,we take factor using water we will found factor between 6 to 7 ,while on KF Reagent bottle mentioned 5 mg/ml water content.if we not use dried methanol it is effect on factor.

772


How to start the dissolution development for unknown tab?

392


how to calibrate hplc & gc

3181


How to determine water content of bis tetrazole amine mono ammonium salt

2061


why should we perform dissolution PVT calibration only by UV spectrometer, not by HPLC ?

439


why we use Dichlorobenzene.nitrobezine.t-butyldi sulhate.for calibration of gc Head space

1013