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 10751

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

Reddy Labs,

4 11609

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

Reddy Labs,

3 11137

How you start the method development of unknown compound.

1 5903

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

3486

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

MSN Pharma,

3 11346

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

Micro Labs,

4 13822

WHY KBr is used in IR Spectroscopy

GVK,

3 13839

How can you prepare 0.05M Ammonium acetate volumetric solution?

2 25055

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

DRL,

2 13632

IF WE INCREASE FLOW RATE RT DECRESE.WHY

2 10639

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 15908

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

Posh Chemicals,

2 10152

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

2591

various methos to calculate precision in validation methods in HPLC?

2 7547

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Un-Answered Questions { Analytical Chemistry }

how you establish the LOQ?

793

What is the difference between chromatographic purity and related substances?

1375

Qc interview questions

1741

how much mass should be there in volumetric flask while in preparation of sample for assay?

2578

what is impurity profile. how to interpret this impurity profile to a drug product or drug substance.

2629

if you given one product then which tests you will perform?

708

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

2545

What is the difference between purge septum flow and column flow in gas chromatography?

2584

What is the main difference between ODS1 and ODS2 Hplc column.

5219

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

2718

some product having water content method with pyridine and ethylene glycol mixture instead of methanol? how they are selecting and methanol is not suitable solvent how ?

2653

we are performed SOR for a particular product the limit is -6 to -10.We face particular bathes it is not meeting the specification.we performed diffrent instrument diffrent analyst we are getting diffrent diffrent results.solvent is dimethyl sulfoxide what could be the reasion

1871

What is gelatinization?

1618

How you develop a method in HPLC?

2616

in dissolution why pool sample needed? in which type of drug pool sample need?

3179

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