Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

what is dwell volume in HPLC?

Aurobindo, Cadila, Strides, SUN, Sun Pharma,

2 6579

what does pH stand for?

Orchid,

4 6935

Definition of beers_ lamberts law

Aarti Industries, Agio Pharmaceuticals, Emcure, Supriya Lifescience,

4 6578

Why monograph of hplc coming upperside of drift but in IR monograph coming in drift side?

1 3291

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

Zim Laboratories,

1859

Why the ph limit (1_14) Is used?

Cipla,

3 6988

What is cut off value of solvent used in hplc

Pfizer,

1 5552

How to calculate mass balance in RS after degradation

Reddy Labs,

1 5071

if out of two set of results of moisture analysis first 1 is passing, second one is failing, is it oos ? or vice a versa first 1 is failing and second one is passing. for information mean value to be reported and in mean value the substance is ppassing, is it oos or normaal mean value to be considered?

JBCPL,

1 2919

Can we interpret accuracy from linearity in method validation?

Dr Reddys, Lupin,

1 2111

What is aggregate and fragments in SEC?

1573

how pyridine can be analysed other than GC?

1 3322

What is the calibration of uv process and preparation

Aurobindo,

1493

How to prepare 1000ppm methylene blue solution

2 19003

Identify problem faced when mass spectroscopy is used with HPLC system ?

College School Exams Tests,

1372


Post New Analytical Chemistry Questions

Un-Answered Questions { Analytical Chemistry }

how to calibrate hplc & gc

4023


How doing qbd practically?

417


how you start the solubility study?

334


How do we quantify crystaline and amarpous forms by using (NMR, XRD)spectroscopic techniques? Which any others instruments are useful for this quantification? explain

1946


How to choose the which salt is suitable for mobilephase

2637






Why only Copper standard is used to calibrate Atomic Absorption spectrophotometer?

2128


function of detecter in hplc ,gc and spectroscopy? function of carrier gas in gc?

2055


What is the diference between residual solvents and organic volatile matter

1477


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,

2032


inhouse product is in capsule form in combination and RLD is in tablet form then can we proceed for multimedia CDP? in inhouse capsule product disso is paddle with sinker in release media is there then RLD product in tablet form then with same as paddle with sinker we can proceed n.a.?

279


Identify problem faced when mass spectroscopy is used with HPLC system ?

1372


what is biorelivent dissolution media?

298


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

1752


Why we select scan range from higer wavelength to lower wavelength in uv visible spectroscopy and ftir spectroscopy ? .

450


UV and PDA detector, which have less signal to noise ratio?

636