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

Analytical Chemistry Interview Questions

Questions Answers Views Company eMail

i set electrode to 7 buffer than i used it to check 4 buffer and 10 buffer if the results are not as expected than is it better to set the buffer again to 4 buffer or is there any other method available please let me know ...

Glochem,

2 7061

How much is the standard area for glc analysis

2240

function of detecter in hplc ,gc and spectroscopy? function of carrier gas in gc?

DRL,

2625

what type of compounds do we see lod @ wat type compounds do we see m.c

Orchid,

3 9401

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

Ajanta,

1 7540

How can we calculate "confidence interval" in analytical method validation? Pl. explain with example.

Cipla, Rampex Labs,

4202

What the difference in loss on drying and residue on ignition

2 35041

Why irmoisture balance is used for corrugated box moisture testing

Leiutis, Lupin,

2378

why we are used 4,7,9,2 buffers for the ph calibration

Aurobindo, Enaltec Labs,

4 19499

In case of HPLC coloums what is the difference Between C8 & C18 coloums & how can we select difference type of coloums like Inertial ODS , Hypersil BDS , ODS etc.?

MSN Pharma,

4 33293

Is sonication essential in solubility testing of a drug substance?

Aurobindo,

6 16541

what is different between volumetric solution and general solution

1 18800

what is primary solution and secondary solution

2 8335

what is RI detector Cut-off Value

Mylan,

1 9922

In Related Substances Test how we can reside the limit of impurity ?

MSN Pharma,

2 11315

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Un-Answered Questions { Analytical Chemistry }

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

2007

How to set specification of assay, fisdolution and related substances?

846

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

2500

what is biorelivent dissolution media?

767

cefoperozone and sulbactam inj. hplc test method

2664

how you fix the limits of impurities?

813

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

2322

what is the principle involved in turbidometry and nephelometry ?

4134

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

1830

For standardization of volumetric solutions, acceptance limit for concentration is considered as 10% of nominal concentration and %RSD as NMT 0.2% (for appropriate no. of replicates). But , if %RSD has not met, what should be further action?

1873

What is the formula for relative diffrence for standard solution in solution stability in validation?

766

in each media we require to use SLS? how to proceed?

743

effect of pore size, pore volume, partical size, column length, carbon load on retention time? what is carbon load? what is the use?

873

if rsd failed then what require to do?

795

why are measure gas flow " ml " in Gas chromatography

1622

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