Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

tell me about aliphatic acid estimation by hplc which columns can we use

Dr Reddys,

1 1099

does water content by KF will calculate only external moisture absorbed or the ligand ? (for ex copper sulphate pentahydrate)

NA,

466

Why we perform the ir analysis?

Sequent,

2 906




difference between calibration and validation

Mylan,

2 1632

why lactose has less charges when packed in steel containers when compared with packing of lactose in polyamide material?

884

Data was integrated with RRT CONCEPT OR Overlay with SSTchrmatogram concept which is better?

1 739

what is the difference between qualitative analysis and quantitative analysis and explain them?

Dr Reddys,

1 686

why disodium tartarate used in karl-fischer instrument ?.

Dishman,

607




why does used dry caffien in HPLC calibration?

Dishman,

500

Why we don't add Hcl, HNO3, H3PO4 in residue on ignition, why we add H2SO4

1 1178

What is gelatinization?

Nestle,

306

What is FFA, PV, and PAV value in oil.

Nestle,

423

Why we check moisture,ash & AIA in product

386

When recording an IR spectrum in the lab, we take no special precautions to account for the presence of oxygen, nitrogen, or argon in the air. What are the consequences of this?

307

about method developement in hplc

321


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Un-Answered Questions { Analytical Chemistry }

IS THERE ANY EQUIPMENT TO CHECK AND CALCULATE THE POLARITY OF A LIQUID?

1159


what is the purge flow & how to calculate

1097


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

1063


What is the meaning of Base deactivated vials

924


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

1095






How to start the dissolution development for unknown tab?

222


which one is better separation in high pressure liquide chromatogram orlowpressure chromato gram in hplc

858


in dissolution why pool sample needed? in which type of drug pool sample need?

1747


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

1491


What is importance of pH in the Heavy metal test and How it effect on the test results?

863


sop of a uv visible spectrophotometer double beam elico model

4028


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

830


why sre you used Potassium hydrogen phthalate in standarisation of 1N NaOH and 0.1 N Perchloric Acid?

6549


What is the principle of Thermal conductivity detector and FID?

1313


what is the extinction coefficient for Indomethacin or at 319nm wave length.

2450