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

Analytical Chemistry Interview Questions

Questions Answers Views Company eMail

why urasil use in hplc column perfomance?

Bayer,

1 9009

how do you perform reverse enginearing study for drug containing sodium chloride sodium citrate sodium bicarbonate

Strides,

1 4554

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

Adley, Micro Labs,

2545

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

2608

what is the working priniciple of ph, what are parts in ph meter

1 10095

why using the ph 4,7,9.2?

SRF,

1 6169

What is Temperature ?

Reddy Labs,

2 10649

What is the column performance and column efficiency?

Reddy Labs,

1 11094

why we are using in ph calibrations ph4,7,9.2 buuffers only?

Reddy Labs, Unichem,

3 17850

Is it necessary to validate both assay and related substances for usp official methods for products.

Apotex,

6 14284

why we use a particular hplc column for a particular compound give reasons?please

Dr Reddys, Indoco Remedies, Natco,

2752

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

Reddy Labs,

2457

what is the difference between lod and loq?

Apotex, Aurobindo,

4 37375

What should be the level/ Percentage of Arsenic in Arsenic free zinc.

FDC, Laurus, Pharmaceutical,

2233

What is the exact reason to use THF and IPA in buffers of Reverse phase HPLC as a solvent?

Dr Reddys,

1 5171

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Un-Answered Questions { Analytical Chemistry }

AT WHAT CONDITIONS WILL YOU ANALYSE A SAMPLE,WHICH ARE PRESERVED AT OTHER THAN THE AMBIENT CONDITIONS?(ie COLD STORAGE SAMPLES BELOW 20* CENTIGRADE?

2056

why sre you used Potassium hydrogen phthalate in standarisation of 1N NaOH and 0.1 N Perchloric Acid?

9798

What is control room temperature and which guide line says?

1637

what is the extinction coefficient for Indomethacin or at 319nm wave length.

4071

Why sometime potassium ortho phosphate mix with acetone use for sample preparation for hplc

1469

why we are using hexane in calibration of number of drop per mL

1739

Why we use potassium dichromate in uv calibration Exact reason behind it??

1259

WHY given much noise PDA dector then VWD Dector

2101

What is column in chromatography?

2238

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

2592

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?

1779

How to start the dissolution development for unknown tab?

1680

Which parameters require to do in tech transfer?

755

Why are use silicon oil mr?

1204

what is mean by dissolution biowaiver study?

933

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