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Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

how can delete the impurity in 1-(2:6 dichloro phenyl)-2-indolenone.and desolving the impurity in which solvent but does not desolve product in solvent.

1 1753

What is the pilot-plant in pharma sector.

Dr Reddys,

1 1913

What is blank titration of potentiometrically.

2 8720

process of Diclofenac sodium,IP.

1234

why we are using benzene, anyline in acetic anhdride assay titration method?

1161

which solution used for detecting factor of k.f.titroter except water

3 7450

in dissolution why pool sample needed? in which type of drug pool sample need?

Torrent Pharma,

2167

void volume is depending on column or not? if yes how will you depend?

Granules,

1 5930

what is difference between polarity and dipolemoment

Neuland,

3 7450

in determination of(acetone) moister content we are using methanol replaced by pyredine.what hapend in that reaction.

Glenmark, Neuland,

2 7084

what is impurity profile. how to interpret this impurity profile to a drug product or drug substance.

1625

What is the difference between spectro meter and spectro photo meter?

APM, Graviti Pharmaceuticals, Ranbaxy,

1 9360

How do u differentiate primary

1 1815

WHEN AN UN KNOWN SAMPLE IS GIVEN TO U,HOW WILL U START THE ANALYSIS(ie FIRST WHICH TEST TO BE DONE,NEXT,THEN NEXT),HOW WILL U DECIDE WHICH TYPE OF ANALYSIS TO BE DONE FOR IT?

Aurobindo,

2 8722

WILL YOU DRY DST BEFORE FACTOR DETERMINATION BY USING KARL FISHER TITRATOR

Aurobindo, Meghmani Organics,

4 8840


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Un-Answered Questions { Analytical Chemistry }

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

1413


Basic principle of ESI?

1195


what is difference between UV - VISIBLE MODEL NO like 1600,1601,1700 etc ? plz explain me

1611


cefoperozone and sulbactam inj. hplc test method

1596


How would you decide dissolution medium for NCE compound of class I drug

1130






Why sodium hydroxide used for maintain pH of phosphate buffer

1344


2. Two grams of Benzoic acid are dissolved in 200 ml of water and extracted with 200 ml of diethyl ether. The distribution coefficient of benzoic acid is 100, and its dissociation constant is 6.5 10-5. Calculate the distribution ratio (D) of benzoic acid at pH 2, 5, and 6. 3. Calculate D at pH 2 to 10 (1 unit apart) in the above problem, and plot D versus pH.

1243


how to calibrate hplc & gc

3513


what is definition of validation? which components are followed give detail?

1285


what is difference in ods I ods II is this is realy from sorbent / packing characteristics or from other means

1073


WHAT IS THE PURPOSE WE USE HCL, CHOPPER, BURNER, MONOCHROMATOR in AAS? PLEASE EXPLAIN BRIEFLY

1495


Principle of single pan analytical balance

4127


What are the primary considerations in extractables and Leachables ?

1358


How to check hplc detecter sensitivity?

626


Many times I don't got a caffeine peak in calibration of hplc using guard column ❓

672