Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

about analytical chemistry

Apotex,

694

What is differences between normality and molarity.in which cases both are used?

GVK,

1 4308

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

USV,

947




what are the ideal conditions for coloumn storage

Srikem Laboratories, Claris Lifesciences,

2 3554

i want to know about headspace and interview question on headspace

Srikem Laboratories,

1 2873

class of solvent regarding Residual solvent e.g. Acetone his class

1 1905

why we multiply 1000 in the determination of kf factor ?

Stellence Pharm Science,

3 4400

why we measure PH of a solution in PH only why not POH ?

Stellence Pharm Science,

1 2154




In Dissolution Test why limit is define Q+5% what is the role of +5%.

1338

Through assay by hplc(anhydrous basis) product got 100.8% .How much the potency of that product.Moisture content is 1.7%,Sulfated ash is 0.02%,Total impurities are 0.3%

2 3402

Why pyrene is also use for calibration if detector

Cipla, Dr Reddys,

1 1991

what is difference in ods I ods II is this is realy from sorbent / packing characteristics or from other means

Sandoz,

645

In gas chromatographic analysis sometimes we use headspace, why it is required instead of manually injection?

1 2459

How to fix the sample concentration in related substances development.

Novartis, Watson Pharmaceuticals,

3 4271

Who discovered X-ray

Huntsman Corporation,

2 2362


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Un-Answered Questions { Analytical Chemistry }

What is method validation in quality control

2327


Explain the relations between number of carbon atoms in alkanes and retention time ?

576


what is weight veriation in pharma industry ? plz explain me

985


Why a1% value is used for some product ? What is the criteria for selection a1% value ?

883


How to define samples weight in moisture content

81






why lactose has less charges when packed in steel containers when compared with packing of lactose in polyamide material?

905


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

664


what is lod and loq ?,why use k2cr2o7 , kcl h2so4 in uv calibration ?,why use benzophenone & caffene acetone in hplc calibration ?,what is leading peak in hplc ?why we do the calibration of limit of stry light in hplc & uv ?

2029


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

928


why we do the calibration of limit of stry light in hplc & uv

1342


why equlirium conatant of water have 14 value

872


some product having water content method with pyridine and ethylene glycol mixture instead of methanol? how they are selecting and methanol is not suitable solvent how ?

1104


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?

861


if you have given a blank water how you analyse by general analytical techniques?

654


How to start the dissolution development for unknown tab?

252