Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

what is a differance between assay by HPLC and assay by titration?

5 21414

what is PH of 0.1N Hcl, 0.01N Hcl & Mehanol.

3 41598

what is batch no. of prednisole tablet.

Dr Reddys,

8 10062




HOW RRF IS CALCULATED IN HPLC

2 9173

why should we do limit of stray light in UV calibration and why should use potassium chloride

2 24891

why ph is between 0 to 14

Reliance, Apotex, Zydus Cadila,

6 17729

what is the definition of limit of stray light in UV calibration

Zydus Cadila, FDC,

1 21797

what is the dipolement and how it is related to IR

Aurobindo, AJ Square Inc,

1 6041




why we are using in ph calibrations ph4,7,9.2 buffers only?

Reddy Labs,

5 14606

why hexane is used for FID calibration in GC

Glochem,

1 2865

what is %labelled amount in content uniformity of dosage unit and its calculation?

Zydus Cadila,

3655

how to prepare 5normality of hcl

2 40574

in pentoperazole capsules usp why assay value is substract from dissolution

Ranbaxy,

1 2120

diference b/w packed &capilary columns

2 5707

how to prepare 5 normality of h2so4 solution

Symbiotec,

3 52493


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Un-Answered Questions { Analytical Chemistry }

what is definition of validation? which components are followed give detail?

955


How can we confirm the HPLC column is end-capped or not? Is it possible to identify by physical appearance?

1899


WHAT IS THE CRITERIA FOR SELECTION OF TIME OF DISSOLUTION AND THE MEDIUM OF DISSOLUTION?

1433


Describe your field experience sample type collected,sample techniques,field measurements taken and equipment used?

1518


why we use Dichlorobenzene.nitrobezine.t-butyldi sulhate.for calibration of gc Head space

995






why should we perform dissolution PVT calibration only by UV spectrometer, not by HPLC ?

415


what is difference in ods I ods II is this is realy from sorbent / packing characteristics or from other means

759


What is method validation in quality control

2455


How can we calculate "confidence interval" in analytical method validation? Pl. explain with example.

2516


what is turbidimetric titration?Give 2 examples.

1170


What is aggregate and fragments in SEC?

705


What is stray light in uv what are units for stray light

303


explain 5 components of gas chromatography ?

724


Why sodium hydroxide used for maintain pH of phosphate buffer

1003


In HPLC (Waters) software Empower1,2 &3 what is the updation for each version

1483