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 1224

What is the pilot-plant in pharma sector.

Dr Reddys,

1 1067

What is blank titration of potentiometrically.

2 7442




process of Diclofenac sodium,IP.

874

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

821

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

3 6438

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

Torrent Pharma,

1824

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

Granules,

1 5163




what is difference between polarity and dipolemoment

Neuland,

3 6358

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

Neuland, Glenmark,

2 6234

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

1049

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

Ranbaxy, Graviti Pharmaceuticals, APM,

1 8457

How do u differentiate primary

1 1318

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 7622

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

Aurobindo, Meghmani Organics,

4 7724


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Un-Answered Questions { Analytical Chemistry }

How to choose the which salt is suitable for mobilephase

1673


What is the main difference between ODS1 and ODS2 Hplc column.

1833


What is the exact reason to use THF and IPA in buffers of Reverse phase HPLC as a solvent?

2492


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

984


How can we confirm the HPLC column is end-capped or not? Is it possible to identify by physical appearance?

1836






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

902


can we use the same detector in HPLC as well GC and what could be the differences we can find in the final chromato graph in any aspects?

913


What is the diference between residual solvents and organic volatile matter

681


Home heating oil or furnace oil what is made from? Can (base oil plus diesel/kerosen) = home heating oil?

864


why equlirium conatant of water have 14 value

909


acceptance criteria for lod & loq by standard deviation of response and slope??

1185


Colorimtry

221


calibrtion procedue of LC-MS

1268


1)What's the meaning of Absorption,give a example. 2)What's the meaning of Adsorption,give a example. 2)what is the difference between Absorption and Adsorption.

1145


for heavy metal test lead used in which form pure form or any other form for preparation of lead standard sol

3598