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 5497

how v can identify functional groups by wet techniques?

2 1951

What is the difference in OVI and Residual solvents?

Discovery Intermediates,

3 9524




what is the method of UV cabinet CALIBRTION

2 9614

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

Sharp,

1071

why IR graph or spectra comes down ? Any reason

3 11822

what is partion and column chromatography

Emcure,

1025

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

Neuland, Emmennar,

3 10219




How to establish pKa for a new API molecule ?

Neuland, Sun Pharma,

2 7770

why we are adjusting the ph in buffer solution preparation

2 8628

what is the film thickness in ftir

8 8034

what is the principle of assay of sodium nitrite?

2 7227

why required specificity in valdation

3 5018

why we are analyzing purity on HPLC why not in gc

Reddy Labs, Aurobindo,

3 10309

whate is difference between calibration and validation

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

11 39511


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Un-Answered Questions { Analytical Chemistry }

what is separation techniques.

1321


what is partion and column chromatography

1025


how to selecet an exact coloumn for an new molecule development by hplc how to select exact salt as buffer for new molecule development by hplc what is the the process to select the mode of saparation of compoundes by hplc what is the use of ph of buffer what is use of buffer,ph,organic phase,ans methods how the molecules get saparated in coloumn,

1118


calibrtion procedue of LC-MS

1243


How much is the standard area for glc analysis

913






how a particular wavelength can be different for a particular compund while analysing by uv and by HPLC.

1075


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

1417


IS THERE ANY EQUIPMENT TO CHECK AND CALCULATE THE POLARITY OF A LIQUID?

1208


Which type of column should i use to check the purity of high molecular weight protein using HPLC reverse phase column chromatography? Hi everyone. I wanna to check the purity of high molecular weight protein (collagen) with MW of ~130 kDa using a HPLC. I know C18

636


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?

315


in dissolution in one tablets two molecule one is losartan & second is HCTZ losartam is complies in s1 stage & hctz is complies in s2 stage then how to report result losartan s1 stage result or losartan s2 stage result

897


2. Two grams of Benzoic acid are dissolved in 200 ml of water and extracted with 200 ml of diethyl ether. The distribution coefficient of benzoic acid is 100, and its dissociation constant is 6.5 10-5. Calculate the distribution ratio (D) of benzoic acid at pH 2, 5, and 6. 3. Calculate D at pH 2 to 10 (1 unit apart) in the above problem, and plot D versus pH.

862


How to determine water content of bis tetrazole amine mono ammonium salt

1896


why octanol used to determine the partition coefficient ?

952


4. Describe the operation of the Craig apparatus. Chapter.3 Equilibrium Processes in Separations

1257