Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

how does h2so4 prevent oxidation of mohr salt before it is titrated?

1 871

In dissolution of tablets/capsules elaborate the Dissolution limit 20.0% to 60% Q in 30 minutes.

775

in HPLC injection volume is increase ,R.T will increase ?

Claris Lifesciences,

5 5204




How to caluculate the RRF and correction factor in hplc

Aurobindo, Alkem Labs, Rakshit Drugs, SDLPL,

1 6963

What is the optimum period of storage of indicators?

Orchid Chemicals and Pharmaceuticals,

1 2428

what is the most common FT-IR source used for the MID&Near IR regions?

Dr Reddys, Piramal Enterprises,

1 3068

How much carbon loading in nomalphase columns?

5 2842

Chromatographic Purity is a Qualitative analysis

Shasun Chemicals,

2 2541




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.

Atul,

750

Why only hydroxy naphthol blue indicator is used for standardisation of 0.05M EDTA solution instead of solochrome Black T or Euriochrome Black T indicator which is used for all sample analysis with 0.05M EDTA solution?

1078

Why we use methanol as solvent in kf standardisation. Why not other solvent?

Caplin Point, Epione Labs, Hetero,

1 3581

if relative response factor is 1.07, to select how much value

Natco,

1 2322

What is the use of ELSD in HPLC?

Anthem,

3 2818

What is difference between FID and TCD in gas chromatography

VPCPL, Cipla,

1 5064

What is the difference between high pressure gradient and low pressure gradient in hplc?

Cipla,

1 3924


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Un-Answered Questions { Analytical Chemistry }

What is the principle of HPLC, GC, LCMS, GCMS,LC QQQ, GC QQQ, LC Q TOF and GC Q TOF. What are the applications and Specificity?

6069


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

1042


What is Band broading effect explain

621


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

857


Why potassium dichromate is used in calibration of uv?

373






iam usig ph buffers merk. manually how to prepare ?

1029


what is partion and column chromatography

1079


How much is the standard area for glc analysis

992


what is procedure of actual procedure for registration of drug?

693


please explian me about area normalisation method,diluted standard method,impurity vs impurity and which one has to be selected in method development

378


why we are using hexane in calibration of number of drop per mL

278


cefoperozone and sulbactam inj. hplc test method

1318


How to compare XRD graphs against standard and carry polymorpism study of API's by powder XRD method?

2622


pharma industries oriented

882


what type of question will ask in the interview of lab chemist.

2154