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 5385

how v can identify functional groups by wet techniques?

2 1850

What is the difference in OVI and Residual solvents?

Discovery Intermediates,

3 9354




what is the method of UV cabinet CALIBRTION

2 9418

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

Sharp,

1040

why IR graph or spectra comes down ? Any reason

3 11643

what is partion and column chromatography

Emcure,

997

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

Neuland, Emmennar,

3 9985




How to establish pKa for a new API molecule ?

Neuland,

2 7645

why we are adjusting the ph in buffer solution preparation

2 8452

what is the film thickness in ftir

8 7881

what is the principle of assay of sodium nitrite?

2 7084

why required specificity in valdation

3 4901

why we are analyzing purity on HPLC why not in gc

Reddy Labs, Aurobindo,

3 10165

whate is difference between calibration and validation

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

11 39058


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Un-Answered Questions { Analytical Chemistry }

In HPLC Calibration, On which basis RSD Limit of noise test is fixed (NMT 33.0 % )

1921


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?

860


what is difference between UV - VISIBLE MODEL NO like 1600,1601,1700 etc ? plz explain me

1136


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

182


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

794






As per ICH related substances stability trend limit from initial to shelf life

1651


using gradient pressure in gas chromatography are not ?using gradient pressure why

2076


for heavy metal test lead used in which form pure form or any other form for preparation of lead standard sol

3494


How they found 1mL of K.F reagent is equivalent to 5mg of water and if we change the composition of K.F reagent, is it can neutralize more amount of water?

268


How can we calculate offset value pH measurment

148


what is the identification test of volatile substance? what is volatile compound?

931


Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...

182


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

951


how can give the expiry period and restadardisation of volumetric solution

1246


What is control room temperature and which guide line says?

285