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 2658

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

NA,

1421

Why we perform the ir analysis?

Sequent,

3 3530

difference between calibration and validation

Mylan,

2 4048

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

1747

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

1 2272

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

Dr Reddys,

1 2563

why disodium tartarate used in karl-fischer instrument ?.

Dishman,

1 2045

why does used dry caffien in HPLC calibration?

Dishman,

1553

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

1 3149

What is gelatinization?

Nestle,

1160

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

Nestle,

1 3105

Why we check moisture,ash & AIA in product

1389

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?

1 1906

about method developement in hplc

1200


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Un-Answered Questions { Analytical Chemistry }

1)What's the meaning of Absorption,give a example. 2)What's the meaning of Adsorption,give a example. 2)what is the difference between Absorption and Adsorption.

2410


why we should take dst factor for below 1%moisture samples

2186


In GC calibration,what is the procedure to calibrate the TCD (thermal counductivity detector)suggest ?

2698


How require to perform linearity as per ANVISA? What are the acceptance criteria?

701


in hplc chromatogram started from left to right and in uv spectrum started from left to right

457






what is turbidimetric titration?Give 2 examples.

1975


mode of absorption in alimentary canal?

1913


what is mean by extactable and leachable study?

553


What is the Formula for coreletion coefficient in plhplc calibration

1230


What is mean by PDR?

318


if you have given a blank water how you analyse by general analytical techniques?

1497


UV and PDA detector, which have less signal to noise ratio?

632


what is biorelivent dissolution media?

292


why glutent are detected in the rice cereal baby food product even manufacturer claimed that they are using rice and milk only?we have using ELISA to do the test,and rice supposed not containing any glutent,rite?We already repeat the test so many times and it still detected.just wondering where the glutent came from?

2326


how to set sample and standard concentration in RS method?

350