Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

what is the moisture content of Disodium hydrogen tartrate. how it can be calculted. as 16.5%

1 6543

In Karl Fischer titration,What is the situation if the material tested is only soluble in water,and not soluble in the common solvents used such as methanol ?? [e.g. Iron III Hydroxide polymaltose]

1591

sop of a uv visible spectrophotometer double beam elico model

Sun Pharma,

4264




why does the result variation in hplc and gc with same sample ?

Matrix,

4 8221

How will you select mobile phase in HPLC Method Development

3 14003

how to regulate noise in hplc ?

2 6945

why results are variation in same samples analysis in gc and hplc ?

2 6384

why base line not start from zoro in GC Chromatograme.

Merck,

1 6194




What is cleaning validation of rinse and swabe and its limit with caculation formula.

5 7112

what is the difference between c-8 and c-18 column

7 16529

why deutiriated chloroform used in NMR for sample prepration. what reaction takes place.give reasons

1 5413

how do u optimise hplc method

1 5663

How to calculate %w/w and %v/v of a component(or solvent)by NMR

ACME, Vimta Labs,

1 6039

How to prepare 10% HCl from 36.5% HCl solution.

Dr Reddys,

5 100832

How to prepare 50 ppm ammonia solution form 25% ammonia solution?

Cadila, IIT,

8 21467


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Un-Answered Questions { Analytical Chemistry }

how can I make the copper get white bye any salt or acit?

1050


iam usig ph buffers merk. manually how to prepare ?

1049


What is control room temperature and which guide line says?

423


could negative ions be produced by bombardment process in mass spectrometry?

263


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

1484








1123


What is column in chromatography?

882


why lactose has less charges when packed in steel containers when compared with packing of lactose in polyamide material?

1022


what is the different in Total ash, sulphated ash, acid insoluble ash, alcoholic or non alcoholic ash?

7346


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

885


How to start the dissolution development for unknown tab?

392


WHAT IS DIFFERENCE B/W MALTINGRANG/DSC

1239


pharma industries oriented

908


which one is better separation in high pressure liquide chromatogram orlowpressure chromato gram in hplc

1014


Why sodium hydroxide used for maintain pH of phosphate buffer

1022