Analytical Chemistry Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Analytical Chemistry Interview Questions

Questions Answers Views Company eMail

What is mean by peak tailing in case of GC?

5 15914

why we are taking 85 ml of concentrated HCl to prepare 1N Solution

SG Phyto Pharma,

4 119123

What is diffrence between residue on ignition and sulphated ash?

Aurobindo, Cadila, Dr Reddys, Mylan, Panas Pharmaceuticals, Piramal Healthcare, Remidex, Zydus Cadila,

37 204306

how can standardized of HCl of 0.1 N

7 48731

What is the difference b/w OVI Solvents and Residual Solvents in case of Gas Chromatogaphy and What is its Detection Limit?

Jubilant Organosys, Suven Life Sciences,

8 38958

what is the diffrence between absorbance and absorption in the beer,s lamber formula ?

2 11082

one gram of which below elements has the most atoms in its? a) H b) D C)T D) He

4 7135

0.1 atom gram of the unknown element( X)reacts with 2.4 gram of O2 to produce the oxid product . can you tell us, what is the oxid formula ? a) XO b)X2O3 c)XO2 D) X2O4

Ajanta,

1 4009

Why we use Uracil for HPLC calibration in Detector wave ength accuracy test?

5 26163

k.f principle in finding out moisture content

1 13279

What is difference btw UV detector & RID detector

4 19106

What's the importance of these procedures?

1 4985

How precise should be the linearity in HPLC method validation?

Glenmark,

3 11643

what should be the precision during technology transfer?

Glenmark,

3 9183

why we use vanillin in melting range calibration

3 14623

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Un-Answered Questions { Analytical Chemistry }

How to compare XRD graphs against standard and carry polymorpism study of API's by powder XRD method?

3822

mahagenco syllabus for the post of chemist

6429

In which situation we require to prepare the standard solution from sample in Related substance method?

714

For limit test of heavy metals in BP, Method C require that the substance is ignited at a temperature not exceeding 800 °C. Why confines such the temperature?

4006

can we use the same detector in HPLC as well GC and what could be the differences we can find in the final chromato graph in any aspects?

2127

Principle of single pan analytical balance

5088

how you start the solubility study?

770

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

3631

on the basis of bcs class how to proceed the solubility?

701

why we are using benzene, anyline in acetic anhdride assay titration method?

2066

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

2631

What is the difference between chromatographic purity and related substances?

1300

sop of a uv visible spectrophotometer double beam elico model

5865

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.

3073

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

1803

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