Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

why we use pyridine to determine moisture content of acetonel

Lee Pharma,

2 8532

What impact analysis required for out of calibration and how to proceed

Aventis,

2 4820

Which type of analysis we have to done uv spectroscopy

2 6582




From where 16 or 5.545 is derived in theoretical plates calculation formula by USP or JP/BP/DAB and what is meaning of this coefficient and impact in calculation ?

Nectar Lifesciences,

2 7725

What is the difference between uplc and hplc

Hetero, AAU Assam Agricultural University,

4 21140

What is meaning of audit trail in hplc

Raks Pharma, Lee Pharma, DRL,

3 18621

How we can determine OOT limit in Stability

MSN Pharma,

1 9363

why we are using k2cr207 in uv calibration ? why we r not using kmno4?

Glochem, Sidmak Laboratories,

1 3654




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?

Cipla, XYZ,

896

WHAT IS DIFFERENCE B/W MALTINGRANG/DSC

Glochem,

1140

Home heating oil or furnace oil what is made from? Can (base oil plus diesel/kerosen) = home heating oil?

845

what is the principle of UV Vis spectroscopy, AAS, ICP OES,ICPAES, ICP-MS and FTIR

Perkin Elmer,

5963

What is the principle of HPLC, GC, LCMS, GCMS,LC QQQ, GC QQQ, LC Q TOF and GC Q TOF. What are the applications and Specificity?

5727

What is the difference between Spectroscopy and spectrophotometry,What are the applications?

Cipla, Caplin Point,

4 7072

What is difference b/t uv detector and rid

5 5832


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Un-Answered Questions { Analytical Chemistry }

How will u perform degradation study in detectors other thann PDA in HPLC Methodology

1219


Explain the relations between number of carbon atoms in alkanes and retention time ?

606


WHY given much noise PDA dector then VWD Dector

645


What is third generation HPLC Columns?

689


in gas chromatography what is the difference between gas flow rate and average linear velocity ?

990






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

1380


about method developement in hplc

375


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

883


How can the GC or HPLC method is selected to determine the impurity profile in drug product?

5387


what is the importance of peak purity in HPLC and how we can calculate through manul(not software)?

3070


what is separation techniques.

1322


sop of a uv visible spectrophotometer double beam elico model

4123


What are the primary considerations in extractables and Leachables ?

990


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

884


what is the structure of DOWEX-50

3649