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 10779

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

Reddy Labs,

4 11630

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

Reddy Labs,

3 11156

How you start the method development of unknown compound.

1 5920

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

3489

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

MSN Pharma,

3 11372

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

Micro Labs,

4 13844

WHY KBr is used in IR Spectroscopy

GVK,

3 13866

How can you prepare 0.05M Ammonium acetate volumetric solution?

2 25075

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

DRL,

2 13651

IF WE INCREASE FLOW RATE RT DECRESE.WHY

2 10654

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 15942

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

Posh Chemicals,

2 10174

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

2598

various methos to calculate precision in validation methods in HPLC?

2 7567

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Un-Answered Questions { Analytical Chemistry }

what type of question will ask in the interview of lab chemist.

3326

IS THERE ANY EQUIPMENT TO CHECK AND CALCULATE THE POLARITY OF A LIQUID?

2469

why holium oxide prepared in 10% HCLO4 SOLUTION

1468

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 ?

2663

Hi sir if any product monograph not given known impurities (may be 5 impurities) specifications then how we require to proceed for inhouse formulation?

710

How can we calculate offset value pH measurment

1520

how many types of balance calibration test?

2314

using gradient pressure in gas chromatography are not ?using gradient pressure why

3397

[3/30, 13:29] Manoj P Venkatpurwar: How hplc column selection according to structure? How mobile phase buffer selection on molecule structure?

812

In which situation we require to analytical method validation of excipient?

803

analytical method validation require to with respect to release specification or shelf life specification?

807

If we do accuracy at same concentration at which linearity planned,what is the need to do linearity separately?

2313

Basic principle of ESI?

2159

What is the acceptance criteria for moisture balance when calibrated with sodium sulfate

2053

in monograph 7 imp are there but in vendor showing 5 imp do not req to include 2 imp for that what will be justification?

737

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