Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

Difference between uv detector nd RI DETECTOR? wt s the difference between OVI Solvents nd residual solvents incase of GAS CHROMATOGRAPHY? nd wt s its detection limit?

3 10646

on what basis SOP's can be changed? IF mobile phase ratio is 70:30 to how much % can we change the ratio in HPLC process

Cipla, Ranbaxy,

7 10822

Why caffeine as a reference standard used for calibration of HPLC?

Orchid, Gangwal Chemicals,

11 41571




What is the composition of K.F

IPQA,

6 32760

What should be the precision for HPLC during technology transfer?

3 6133

how do start hplc method development? how much sample required for developing the method development?

BMS, Indoco Remedies, Sun Pharma, Cipla,

3 39965

Wt s the use of linearity in HPLC method validation

4 10982

which pharmacopeoia mentions that caffiene is used as a standard for HPLC calibration? which other standardscan be used for the same?

Hetero, Mylan,

1 5137




Why will a solution of aspirin without acid or basic hydrolysis give yellow colour with a solution of Ferric chloride?

1 3550

Why do we use 0.005M h2so4 solution for preparation of k2cr2o7 solution for UV calibration?

Medreich, Jubilant, Mylan,

3 18893

In HPLC what is Single point threshold, peak purity index and minimum peak purity index? what should be consider for pure peak.

3 21387

why the sucrose used in calibration of polarimeter

Neuland,

5 10808

what r the parts calibrated in gc

Reddy Labs, ELBS,

21 20748

acceptance criteria for ph meter, hplc detector,pump,injector,oven when we calibrate.

3 18202

is there any material other than caffene to calibrate hplc detector

Biocon,

12 16967


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Un-Answered Questions { Analytical Chemistry }

What is third generation HPLC Columns?

598


How we can determine water content in piperazine

810


i want model written test paper for the post of analyst in IOCL(indian oil corporation ltd) any one pls help me

1350


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

754


What is the formula to determine the concentration of M of a solution given the % transmittance? Use %T = 43.7 as an example.

1212






How will u perform degradation study in detectors other thann PDA in HPLC Methodology

1164


mode of absorption in alimentary canal?

1068


please explian me about area normalisation method,diluted standard method,impurity vs impurity and which one has to be selected in method development

240


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

968


In performance Check of GC Why Hexadecane Peak is Considered 

1683


What is viod volume and peak purity in HPLC?

1253


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

644


HI,I CLEARED BOB CLERK EXAM. MY INTERVIEW WILL BE ON 9TH OCTOBER,2010.PLEASE SEND ME INTERVIEW QUESTIONS AND ANSWERS. THANK YOU.

895


1.What is the difference between method validation and method verification 2.Which guidelines proposed to method transfer

144


in gas chromatography what is the difference between gas flow rate and average linear velocity ?

927