Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

What is the diference between residual solvents and organic volatile matter

RA Chem Pharma,

582

WHY given much noise PDA dector then VWD Dector

586

How to decide the standard concentration for related substances hplc method

1 718




Why we have to use KBr pellet technology ?

1 709

Why dissolution test performed on six jar?

Mylan,

1 1233

How to determine retention time in Chromatography

Mylan,

2 2265

effect of Ph during analytical run ?

Lambda Therapeutic Research,

1 540

USP methodology, EP methodology, IP methodology, among three if possible to use one methodology for qualify working standard to use USP, EP, IP ? Please explain...

Srini Pharmaceuticals,

472




is it necessary to do HPLC calibration at wavelength 315nm if we are doing analysis at this wavelangth

Aarti Drugs,

489

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

697

What is the difference between qualitative and quantitative analysis (hplc)

1 901

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

869

How NMR spectra can be calibrated in presence or absence of TMS?

1 758

What is Band broading effect explain

Dr Reddys,

477

we are performed SOR for a particular product the limit is -6 to -10.We face particular bathes it is not meeting the specification.we performed diffrent instrument diffrent analyst we are getting diffrent diffrent results.solvent is dimethyl sulfoxide what could be the reasion

Cipla,

407


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Un-Answered Questions { Analytical Chemistry }

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

6583


Did anybody have method for acetyl cysteine effervescnce tablet

820


Why potassium dichromate was using in Uv calibration?

88


what is the structure of DOWEX-50

3491


what is peak purity and its formula

111






How you develop a method in HPLC?

1189


How can we calculate offset value pH measurment

121


Colorimtry

143


Difference between hlaf and rlaf

601


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

6550


why does used dry caffien in HPLC calibration?

500


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

1234


What is the calibration of uv process and preparation

594




963


Which std. used for standrdisation of ZnSO4?

953