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Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

what is the defination of calibration & verification?

Divis Laboratories,

9 25209

what is specificity?

Amneal Pharmaceuticals, Aurobindo,

4 11197

why we use only vanilline , acetanilide,& caffeine For the Calibration of melting point appartus?

Reddy Labs,

7 27166

who is the father modern liqiud chromatogrphy?

Amneal Pharmaceuticals, Car Chem, Cipla,

3 11494

what is the meaning of ventillation in HPLC?

Amneal Pharmaceuticals,

3 11721

which solvent is highest poler acetonitrile dimethyl formamide methanole tetrahydrofurane buffer solution

8 12185

what is the difference betwen the analytical column & peparative column?

4 12426

why we conclude the area% for the chromatographic purity?

Amneal Pharmaceuticals, Lupin,

1 6494

what is the general mechanism of high performance liqiud chromatography?

Ajanta Pharma, Amneal Pharmaceuticals,

7 14995

why 2Theta value is consider in the XRPD spectra and how to consider the 2 Theta value

2 6870

why we wre doing linearity siudiec in hplc method validation

Cipla,

3 21058

what does optical rotation and specific rotataion means,difference between them

CPL, Neuland,

8 29696

what is regration method in method validation , how we can calculate it.

Cipla, Sun Pharma,

3 10020

viod volume and dead time

Oxygen Healthcare,

7 17313

i want model written test paper for the post of analyst in IOCL(indian oil corporation ltd) any one pls help me

1926


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Un-Answered Questions { Analytical Chemistry }

A ha tc is actual defination of retention time?

782


what is difference between UV - VISIBLE MODEL NO like 1600,1601,1700 etc ? plz explain me

1812


How to start the dissolution development for unknown tab?

894


in sampling of raw material which side is pasted sampled labels

888


What is the difference between chromatographic purity and related substances?

467






Why potassium dichromate is used in calibration of uv?

1006


what parameters we will consider while developing a HPLC method and how we confirm our HPLC method is valid?

2767


If suppose 10 methods of dissolution given in pharmacopoeial for single content product then which method out of 10? or all 10 require to follow?

3


How can I develope method of dissolution by HPLC OR UV

1640


In the HPLC Calibration done wavelength accuracy done between 200nm-280nm .but not done remaining 300-400nm not done ?

48


Ratio of Water and Acetonitrile(diluent) is not recommended to use in cleaning method validation,why?

2212


using gradient pressure in gas chromatography are not ?using gradient pressure why

2688


1.What is the difference between method validation and method verification 2.Which guidelines proposed to method transfer

889


How to know the estimated LOQ concentration in ppm

408


How much is the standard area for glc analysis

1477