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 1279

What is the pilot-plant in pharma sector.

Dr Reddys,

1 1197

What is blank titration of potentiometrically.

2 7575




process of Diclofenac sodium,IP.

932

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

864

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

3 6566

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

Torrent Pharma,

1879

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

Granules,

1 5251




what is difference between polarity and dipolemoment

Neuland,

3 6497

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

Neuland, Glenmark,

2 6350

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

1117

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

Ranbaxy, Graviti Pharmaceuticals, APM,

1 8600

How do u differentiate primary

1 1386

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 7763

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

Aurobindo, Meghmani Organics,

4 7860


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Un-Answered Questions { Analytical Chemistry }

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

1893


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

598


What is AV value in test uniformity content ,describe calculation

257


WHAT IS THE USE OF STARTER ?????????

1132


How can the GC or HPLC method is selected to determine the impurity profile in drug product?

5513






how a particular wavelength can be different for a particular compund while analysing by uv and by HPLC.

1136


how can give the expiry period and restadardisation of volumetric solution

1339


AT WHAT CONDITIONS WILL YOU ANALYSE A SAMPLE,WHICH ARE PRESERVED AT OTHER THAN THE AMBIENT CONDITIONS?(ie COLD STORAGE SAMPLES BELOW 20* CENTIGRADE?

887


what is the different in Total ash, sulphated ash, acid insoluble ash, alcoholic or non alcoholic ash?

7212


why we are using hexane in calibration of number of drop per mL

276


why equlirium conatant of water have 14 value

953


Can we interpret accuracy from linearity in method validation?

794


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

779


are there in uv lamb that is chractrestic for wavelenghth 205 nm ?????

757


Which is the highly polar and highly non polar column in HPLC?

855