Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

why we use x terra columns at higher ph ?

Hetero,

2 7998

what is dead time in hplc?

Orchid,

3 14490

what is the difference between melting range & melting point? Which is more significant?

5 22855




what is the significant of pH in HPlc?

Orchid,

5 10424

what is weight veriation in pharma industry ? plz explain me

1 1127

How to now that my acid is contact with base or base is contact with acid in drugs, is there any techniq to identify the formation of salt(drug)

Reddy Labs,

2 4467

what is least count of a balance? How we find out this? Any formula for least count of Analytical balance?

Dr Reddys, Reddy Labs, Analytical Solutions, Acme Formulation,

11 66998

Explain about Low pressure gradient and High Pressure gradient systems in HPLC?

Mylan, Orchid, Roshanico,

4 19868




what is protocol ? plz Explain me

5 8192

How can we confirm the HPLC column is end-capped or not? Is it possible to identify by physical appearance?

JBCPL,

1836

HPLC Calibration was done in Reverse Phase, but not in normal phase why explain?

Cipla, Orchid,

11 23204

what are the standard methods for HPLC?

Orchid,

1496

What is the procedure for investigation of an OOS (Out of specification) results?

Reddy Labs, Dr Reddys, Biocon,

4 15775

How do you give training to a new chemist

Reddy Labs,

3 7514

what is the Bracketing & Matrixing.

Ranbaxy, Dr Reddys,

8 35004


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Un-Answered Questions { Analytical Chemistry }

For titration in anhydrous media with perchloric acide, if lack of titrator, Which indicator is been used for replacement. How calculate pH of test solution to choose suitable indicator?

878


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

1061


Which products will produce when acetic anhydride reacts with Ter-butanol, Sec-butanol, Iso butanol, Dimethylamine etc.

1419


i want model written test paper for the post of analyst in IOCL(indian oil corporation ltd) any one pls help me

1421


sop of a uv visible spectrophotometer double beam elico model

4156






Can we interpret accuracy from linearity in method validation?

755


give clarity of linearity and range in method validation

942


what is definition of validation? which components are followed give detail?

902


could negative ions be produced by bombardment process in mass spectrometry?

193


Basic principle of ESI?

834


in dissolution in one tablets two molecule one is losartan & second is HCTZ losartam is complies in s1 stage & hctz is complies in s2 stage then how to report result losartan s1 stage result or losartan s2 stage result

908


Which type of column should i use to check the purity of high molecular weight protein using HPLC reverse phase column chromatography? Hi everyone. I wanna to check the purity of high molecular weight protein (collagen) with MW of ~130 kDa using a HPLC. I know C18

657


EXPLAIN THE CALCULATION PART OF AN KF TITRATOR CALIBRATION WITH SUITABLE EXAMPLE

1324


how a particular wavelength can be different for a particular compund while analysing by uv and by HPLC.

1096


what is the different in Total ash, sulphated ash, acid insoluble ash, alcoholic or non alcoholic ash?

7028