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Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

what is dwell volume in HPLC?

Aurobindo, Cadila, Strides, SUN, Sun Pharma,

2 5157

what does pH stand for?

Orchid,

4 5164

Definition of beers_ lamberts law

Aarti Industries, Agio Pharmaceuticals, Emcure, Supriya Lifescience,

4 4682

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

1 2416

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

Zim Laboratories,

1338

Why the ph limit (1_14) Is used?

Cipla,

3 5484

What is cut off value of solvent used in hplc

Pfizer,

1 4521

How to calculate mass balance in RS after degradation

Reddy Labs,

1 3727

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 2035

Can we interpret accuracy from linearity in method validation?

Dr Reddys, Lupin,

1 1178

What is aggregate and fragments in SEC?

1041

how pyridine can be analysed other than GC?

1 2551

What is the calibration of uv process and preparation

Aurobindo,

1044

How to prepare 1000ppm methylene blue solution

2 7951

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

College School Exams Tests,

998


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Un-Answered Questions { Analytical Chemistry }

calibrtion procedue of LC-MS

1594


In the isomers,enantiomers give the only physical properties present such that no chemical properties present.

1292


CAN WE DETERMINE THE PEAK PURITY IN GAS CHROMATOGRAPHY ANALYSIS?

181


what is the procedure for cleaning of lenses of hatr accesory of ftir instrument?

1376


Why are use silicon oil mr?

176






What is third generation HPLC Columns?

1046


WHY pKa value is more important than pH value of the mobile phase in HPLC?

666


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

1529


1)What's the meaning of Absorption,give a example. 2)What's the meaning of Adsorption,give a example. 2)what is the difference between Absorption and Adsorption.

1811


How to start the dissolution development for unknown tab?

650


Basic principle of ESI?

1160


What is gelatinization?

743


In performance Check of GC Why Hexadecane Peak is Considered 

2098


sop of a uv visible spectrophotometer double beam elico model

4595


iam usig ph buffers merk. manually how to prepare ?

1248