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Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

how can you determine a compound acidic or basic?

Celon Labs, Cipla,

2 8467

For LOD and LOQ determination which method is accurate? (slopemethod or s/n ratio method)

Reddy Labs,

4 8103

how to develop the shorter run time for pharmacopeial methods having 100 min run time?

Reddy Labs,

3 8456

How you start the method development of unknown compound.

 1 4241

How to determine water content of bis tetrazole amine mono ammonium salt

 2477

Is there any difference in principal of reverse phase and normal phase chromatography? and why? Please update. Thank and regard

MSN Pharma,

3 8728

How to use RF and rrf in Rs calculation( either multiply or divide)?

Micro Labs,

3 8829

WHY KBr is used in IR Spectroscopy

GVK,

3 10981

How can you prepare 0.05M Ammonium acetate volumetric solution?

 2 16642

Why using 0.5% acetone in methanol mobile phase for HPLC Gradient performance check.

DRL,

2 10764

IF WE INCREASE FLOW RATE RT DECRESE.WHY

 2 8582

in hplc calibration injector linearity pass,it means inj and det is good. why to perform detector linearity is it required, if it is required,what is difference between injector and detector linearity in hplc calibration

Dr Reddys, Hetero,

4 10929

how can you decide API molucule acedic or basic compound by test?

Posh Chemicals,

2 7896

acceptance criteria for lod & loq by standard deviation of response and slope??

 1528

various methos to calculate precision in validation methods in HPLC?

 2 5536

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Un-Answered Questions { Analytical Chemistry }

WHAT IS THE USE OF STARTER ?????????

1398

What is the difference between Discriminating media and DPDM(Dissolution Profile with Different Media)

6069

WHAT IS THE PURPOSE WE USE HCL, CHOPPER, BURNER, MONOCHROMATOR in AAS? PLEASE EXPLAIN BRIEFLY

1438

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

1231

What are the primary considerations in extractables and Leachables ?

1313




What is gelatinization?

743

Describe your field experience sample type collected,sample techniques,field measurements taken and equipment used?

1791

please explian me about area normalisation method,diluted standard method,impurity vs impurity and which one has to be selected in method development

634

How can we calculate offset value pH measurment

530

Why dissolution test is not performed in all of the products

1542

4. Describe the operation of the Craig apparatus. Chapter.3 Equilibrium Processes in Separations

1631

WHY given much noise PDA dector then VWD Dector

1001

In rs method development when we are going area normalization method to dilute standard method?

237

Why six unit used for precision?

201

While performing TOC sst analysis Zero shift disabled & sample analysis zero shift enabled why?

1534

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