Analytical Chemistry Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Analytical Chemistry Interview Questions

Questions Answers Views Company eMail

how can you determine a compound acidic or basic?

Celon Labs, Cipla,

2 9662

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

Reddy Labs,

4 10079

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

Reddy Labs,

3 9835

How you start the method development of unknown compound.

1 5167

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

2956

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

MSN Pharma,

3 10061

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

Micro Labs,

4 12032

WHY KBr is used in IR Spectroscopy

GVK,

3 12371

How can you prepare 0.05M Ammonium acetate volumetric solution?

2 22418

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

DRL,

2 12098

IF WE INCREASE FLOW RATE RT DECRESE.WHY

2 9652

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 13913

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

Posh Chemicals,

2 9041

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

2082

various methos to calculate precision in validation methods in HPLC?

2 6571

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Un-Answered Questions { Analytical Chemistry }

What is intact assay method development.....?

1996

mahagenco syllabus for the post of chemist

5738

What is column in chromatography?

1755

How we performed the force degradation for drug substance, is any specific guideline is available for each parameter(Acidic, basic, oxidation,heat)? what conditions you mentained for above parameters.

1785

what is biorelivent dissolution media?

298

How they found 1mL of K.F reagent is equivalent to 5mg of water and if we change the composition of K.F reagent, is it can neutralize more amount of water?

1294

what is %labelled amount in content uniformity of dosage unit and its calculation?

4611

What is a difference between potency and purity?

634

why cone formation during dissolution?

310

How to fix the sample conc. in Related substances test by HPLC?

605

how to calculate elemental impurities?

534

for which product require to do content uniformity? what is limit of cu?

304

what is classification of elemental impurities? what is risk assement in elemental impurities?

330

if you have given one product then how you determine the impurity in that?

280

Identify problem faced when mass spectroscopy is used with HPLC system ?

1371

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