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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 8435

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 2926

sop of a uv visible spectrophotometer double beam elico model

Sun Pharma,

5359

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

Matrix,

4 10990

How will you select mobile phase in HPLC Method Development

 4 16916

how to regulate noise in hplc ?

 2 8812

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

 2 8360

why base line not start from zoro in GC Chromatograme.

Merck,

1 7861

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

 5 10524

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

 7 21821

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

 1 6740

how do u optimise hplc method

 1 7033

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

ACME, Vimta Labs,

1 8099

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

Dr Reddys,

5 119875

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

Cadila, IIT,

8 28257

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Un-Answered Questions { Analytical Chemistry }

WHY given much noise PDA dector then VWD Dector

1508

Why to use propyl paraben in HPLC gradient calibration

6104

How to set analytical specification for combination products?

328

if peak get problamatic then what require to do?

320

Loss of linearity in tkn analysis, possible reasons?

808




What is mean by PDR?

335

what is the extinction coefficient for Indomethacin or at 319nm wave length.

3525

what is the difference between potentiometric titration and karl fischer titration?

2431

why sre you used Potassium hydrogen phthalate in standarisation of 1N NaOH and 0.1 N Perchloric Acid?

8928

what is mean by dissolution biowaiver study?

330

Why we used in n-butyl acetate water content terminology while in ethyl acetate we used moisture content terminology?

1380

what is the procedure for cleaning of lenses of hatr accesory of ftir instrument?

1807

how you determine moist.of NaOH sol or NaOH flacks

1774

What is the difference between Discriminating media and DPDM(Dissolution Profile with Different Media)

6925

how require to fix the linearity and accuracy cincentration range?

668

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