Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

What are the factors effect peak shape in HPLC ?

College School Exams Tests,

2 2832

Explain the relations between number of carbon atoms in alkanes and retention time ?

College School Exams Tests,

674

explain 5 components of gas chromatography ?

Nucon, College School Exams Tests,

698




Describe 5 components of SFC ?

College School Exams Tests,

1 943

How we can determine water content in piperazine

GVK, Cipla,

919

Difference between hlaf and rlaf

Sharon,

717

What is oot in Stability analysis? (example)

Indoco Remedies,

2 1535

How to choose concentration of LOQ solutions for RS analysis? Example.

Indoco Remedies, Abbott,

805




What is the main difference between ODS1 and ODS2 Hplc column.

Indoco Remedies,

1958

How to select Sample concentration in RS analysis?example.

1 1457

What is Diffidence between Normal Detector and PDA Detector?

Aurobindo,

2 3213

If we have a kc is1*10^8 and the .kp 2*10^5 of reaction A------->B C------->D what is the volume of C?

637

What is linearity in hplc and how to calibration

Aurobindo,

1 1895

Why void volume(time in seconds) 1 in hplc system suitability

1 2557

what is role of pH in mobile phase

Cipla, Dhanuka Laboratories,

3 5148


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Un-Answered Questions { Analytical Chemistry }

Difference between hlaf and rlaf

717


How to check hplc detecter sensitivity?

260


what is different when impergnated silica plates are used in separation of azo dyes using column chromatography?

705


explain 5 components of gas chromatography ?

698


In BP2013, Loperamid HCl monograph. Assay by titration with 0.1N sodium hydroxide using hydrocloric acid 0.01N and reading the volume added between the 2 points of inflexion. I have a question that if the diluent solvent is ethanol is certainly consumed a amount of volume of titrant, so this volume must be eliminated on the result calculation or not apart from first point which is subtracted above.

1642






how to get accurate result for Residue on evaporation in purified water

308


What is method validation in quality control

2431


How to determine the EDTA content by potentiometry titration in Ceftriaxine sodium

1130


Please tell me about the pH of Polycaboxylic ether is it in the 5-6 range ever or more than 6

1354


is it necessary to do HPLC calibration at wavelength 315nm if we are doing analysis at this wavelangth

600


mahagenco syllabus for the post of chemist

4930


Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...

298


What is the diference between residual solvents and organic volatile matter

712


4. Describe the operation of the Craig apparatus. Chapter.3 Equilibrium Processes in Separations

1311


Why to use propyl paraben in HPLC gradient calibration

714