Follow Our FB Page << CircleMedia.in >> for Daily Laughter. We Post Funny, Viral, Comedy Videos, Memes, Vines...

Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

WAHT IS THE ELUTION ORDER IN GAS CHROMATOGRAPHY?

Micro Labs,

3 11574

what is the defferance between the potency and working standard

Arbro Pharmaceuticals, Caplin Point, ECOlogics, Matrix, Orchid, Venus Remedies,

1 4233

what is the principle involved in determination of moisture content?

3 8448

what is difference between assay&purity&potency?

5 28268

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

Cipla,

1 2618

what is leading peak in hplc

Cipla,

1 10753

what is difference between drug products and drug substance?

DRL,

5 83953

From peak purity spectrum, where or at which point peak purity angle & purity threshold is checked?

Cipla, MSN Pharma,

1 2472

how you determine moist.of NaOH sol or NaOH flacks

1394

what is concentration of oxygen in U.H.P. grade N2 cylinder

1 3541

water is more polar than acetonitrile.but in reverse phase chromatography peaks elute earlier when we increse Acetonitrile.what is the reason.

Matrix,

10 41120

I got 88.0 % assay for a drug in HPLC analysis for same injection i got 40.0% related substances is it possible? what is the relation between results of assay and purity?

5 8655

hi i am m.sc organic chem and complete analytical lab tech dipolma now job in qc many time ask question you in m.sc organic why job in qc please help me i can not give proper ans please tell me

Arch Pharmalabs, Natco,

3 8249

why use benzophenone & caffene acetone in hplc calibration

1 14777

why use k2cr2o7 , kcl h2so4 in uv calibration

DRL, GVK,

1 8528


Post New Analytical Chemistry Questions






Un-Answered Questions { Analytical Chemistry }

what type of questions asked on analytical balance and also give answers................all pharma companies?

8709


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.

1243


when we talk about change in entropy we consider total entropy means of surround +entropy of system but when we talk about change in Gibss free energy we consider entropy of system.explain with reason.

1099


How can we detect a compound in hplc which does not have any chromofore?

199


What is rs test why we are performing rs test?

290






Why perchloric acid used for potentiometric titration

1684


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

1989


Why sodium hydroxide used for maintain pH of phosphate buffer

1344


How to choose the which salt is suitable for mobilephase

2115


What is third generation HPLC Columns?

1085


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

1739


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

2517


What are the primary considerations in extractables and Leachables ?

1358


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

1702


Why Ethanol is Used for Standardization of GC Head space?

3064