Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

Plz explain the formula in uv calibration =Absorbance of the sample ( x ) x 10 x 1000/Weight of potassium dichromate taken in mg

1 5287

how v can identify functional groups by wet techniques?

2 1782

What is the difference in OVI and Residual solvents?

Discovery Intermediates,

3 9124




what is the method of UV cabinet CALIBRTION

2 9231

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

Sharp,

1004

why IR graph or spectra comes down ? Any reason

3 11465

what is partion and column chromatography

Emcure,

963

What is the difference between the optics of UV and PDA Detectors ?

Neuland, Emmennar,

3 9731




How to establish pKa for a new API molecule ?

Neuland,

2 7553

why we are adjusting the ph in buffer solution preparation

2 8296

what is the film thickness in ftir

8 7726

what is the principle of assay of sodium nitrite?

2 6922

why required specificity in valdation

3 4795

why we are analyzing purity on HPLC why not in gc

Reddy Labs, Aurobindo,

3 10057

whate is difference between calibration and validation

Ranbaxy, Zydus Cadila, Cipla, Alkem Labs, Torrent Pharma,

11 38607


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Un-Answered Questions { Analytical Chemistry }

In dissolution of tablets/capsules elaborate the Dissolution limit 20.0% to 60% Q in 30 minutes.

653


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...

471


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

476


Please tell me about the pH of Polycaboxylic ether is it in the 5-6 range ever or more than 6

1240


acceptance criteria for lod & loq by standard deviation of response and slope??

1077






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

2015


Ratio of Water and Acetonitrile(diluent) is not recommended to use in cleaning method validation,why?

1584


how much mass should be there in volumetric flask while in preparation of sample for assay? 

1062


How to start the dissolution development for unknown tab?

219


what is DIPE limit in residual solvent?

337


What is the principle of HPLC, GC, LCMS, GCMS,LC QQQ, GC QQQ, LC Q TOF and GC Q TOF. What are the applications and Specificity?

5469


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

144


how will you do the prep for unstable componds?

589


Why Ethanol is Used for Standardization of GC Head space?

2534


what are the standard methods for HPLC?

1406