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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 3500

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

NA,

1864

Why we perform the ir analysis?

Sequent,

3 4839

difference between calibration and validation

Mylan,

2 4960

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

2244

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

1 3106

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

Dr Reddys,

1 3248

why disodium tartarate used in karl-fischer instrument ?.

Dishman,

1 2820

why does used dry caffien in HPLC calibration?

Dishman,

1988

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

1 3907

What is gelatinization?

Nestle,

1575

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

Nestle,

1 4015

Why we check moisture,ash & AIA in product

1825

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 2584

about method developement in hplc

1669


Post New Analytical Chemistry Questions

Un-Answered Questions { Analytical Chemistry }

AT WHAT CONDITIONS WILL YOU ANALYSE A SAMPLE,WHICH ARE PRESERVED AT OTHER THAN THE AMBIENT CONDITIONS?(ie COLD STORAGE SAMPLES BELOW 20* CENTIGRADE?

2019


Why use only methanol,used determinationof moisture content not use other solvents

1362


Why six unit used for precision?

1277


which are the sizes of capsules?

896


process of Diclofenac sodium,IP.

2145


What is related substance by HPLC impurity limits as per USP?

1037


what is the procedure for cleaning of lenses of hatr accesory of ftir instrument?

2232


what are the standard methods for HPLC?

2737


what is biorelivent dissolution media?

753


function of detecter in hplc ,gc and spectroscopy? function of carrier gas in gc?

2614


Why perchloric acid used for potentiometric titration

2635


what is mean by peak intigrity?

868


Basic principle of ESI?

2103


Colorimtry

1620


in monograph 7 imp are there but in vendor showing 5 imp do not req to include 2 imp for that what will be justification?

667