Analytical Chemistry Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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 3123

What is the pilot-plant in pharma sector.

Dr Reddys,

1 3431

What is blank titration of potentiometrically.

2 10862

process of Diclofenac sodium,IP.

2211

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

2114

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

3 10088

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

Torrent Pharma,

3179

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

Granules,

1 7524

what is difference between polarity and dipolemoment

Neuland,

3 10455

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

Glenmark, Neuland,

2 9485

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

2629

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

APM, Graviti Pharmaceuticals, Ranbaxy,

1 11511

How do u differentiate primary

1 3231

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 10938

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

Aurobindo, Meghmani Organics,

4 12335

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Un-Answered Questions { Analytical Chemistry }

about method developement in hplc

1716

What is third generation HPLC Columns?

1981

Why use only methanol,used determinationof moisture content not use other solvents

1405

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

1856

if tech transfer fails whay require to do?

845

EXPLAIN THE CALCULATION PART OF AN KF TITRATOR CALIBRATION WITH SUITABLE EXAMPLE

2636

How can I develope method of dissolution by HPLC OR UV

2408

can i use hplc detector to uplc and why?

2291

How doing qbd practically?

978

what type of question will ask in the interview of lab chemist.

3321

Why sodium hydroxide used for maintain pH of phosphate buffer

2414

What is diffrence between extractable volume and deliverable volume? Answer pls

4573

Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?

2833

My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards

1596

what is biorelivent dissolution media?

807

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