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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 9152

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]

1 3506

sop of a uv visible spectrophotometer double beam elico model

Sun Pharma,

5865

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

Matrix,

4 12296

How will you select mobile phase in HPLC Method Development

4 18091

how to regulate noise in hplc ?

2 9709

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

2 9217

why base line not start from zoro in GC Chromatograme.

Merck,

1 8576

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

5 12042

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

7 23987

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

1 7596

how do u optimise hplc method

1 7684

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

ACME, Vimta Labs,

1 9094

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

Dr Reddys,

5 123075

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

Cadila, IIT,

8 30459


Post New Analytical Chemistry Questions

Un-Answered Questions { Analytical Chemistry }

why cone formation during dissolution?

735


on the basis of bcs class how to proceed the solubility?

701


Why we select scan range from higer wavelength to lower wavelength in uv visible spectroscopy and ftir spectroscopy ? .

856


calibrtion procedue of LC-MS

2669


Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...

1635


Loss of linearity in tkn analysis, possible reasons?

1257


mode of absorption in alimentary canal?

2341


If we do accuracy at same concentration at which linearity planned,what is the need to do linearity separately?

2242


How to establish relative response factor for hplc. Why it is required?

1153


Why are use silicon oil mr?

1154


what is partion and column chromatography

2300


Colorimtry

1620


how to decide for one product require water content or LOD?

726


Which are the diffrent grades of api in pharma?

698


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

2075