Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

what is dwell volume in HPLC?

Aurobindo, Sun Pharma, SUN, Cadila, Strides,

2 4085

what does pH stand for?

Orchid,

4 4161

Definition of beers_ lamberts law

Agio Pharmaceuticals, Aarti Industries, Emcure, Supriya Lifescience,

4 3334




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

1 1874

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

Zim Laboratories,

959

Why the ph limit (1_14) Is used?

Cipla,

3 4342

What is cut off value of solvent used in hplc

Pfizer,

1 3352

How to calculate mass balance in RS after degradation

Reddy Labs,

1 2524




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 1554

Can we interpret accuracy from linearity in method validation?

Lupin, Dr Reddys,

756

What is aggregate and fragments in SEC?

652

how pyridine can be analysed other than GC?

1 2001

What is the calibration of uv process and preparation

Aurobindo,

697

How to prepare 1000ppm methylene blue solution

2 3883

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

College School Exams Tests,

680


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Un-Answered Questions { Analytical Chemistry }

Can we interpret accuracy from linearity in method validation?

756


how much mass should be there in volumetric flask while in preparation of sample for assay? 

1163


Qc interview questions

346


How to do regeneration of Metacarb Pb plus column?

1263


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

1313






What is third generation HPLC Columns?

704


What is the principle of HPLC, GC, LCMS, GCMS,LC QQQ, GC QQQ, LC Q TOF and GC Q TOF. What are the applications and Specificity?

5831


how to select short coloum and long coloumn for new molecule

1023


in gas chromatography what is the difference between gas flow rate and average linear velocity ?

1010


What are modes of quantification in related substances

893


How do we get end points and how many end points are possible for citric acid and di-acid not theorotically answer should be given practically.

1214


In GC calibration,what is the procedure to calibrate the TCD (thermal counductivity detector)suggest ?

1926


from where i get mortar pastle for glass bottle crush? it's required for testing of it?

898


how can give the expiry period and restadardisation of volumetric solution

1297


WHAT IS THE PURPOSE WE USE HCL, CHOPPER, BURNER, MONOCHROMATOR in AAS? PLEASE EXPLAIN BRIEFLY

1071