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 POTASSIUM DICROMATE USING IN UV CALIBRATION

Apotex, Micro Labs, Rene,

1 19438

What is the Baseline in HPLC.

Teva API,

2 12532

Why dst is used in kf for factor determination less than 1

Reddy Labs, Sun Pharma,

4 17965

why should we calibrate pH meter with 4,9.2 and 7.4 buffers particularly?

Celon Labs,

5 15412

why inject diluted standard solution in related substance analysis by HPLC?

Biocon, Sun Pharma,

3 17828

What is the Calcultion of S/N Ratio.

2 11362

Principle of HPLC in one sentance

Syngene,

8 19990

Why are using in Hi,zero air, Ni gass are used GC

Aurobindo, ELBS, Vimta Labs,

5 14424

what is the balance drift?

Torrent Pharma,

2 11863

Retention time & Relative Retention time Definition & between difference? How to Calculate response factor(RF) & relative response factor(RRF)?

MSN Pharma, Titan,

3 20771

why are using toluene in uv calibraion in resolution performance

MSN Pharma,

2 11190

why we make titiration of Iron with EDTA ?

Cipla, Sitec Labs,

1 9154

What is difference b/w IR&NIR

Apotex,

1 5877

Why does boiler drum ph maintain from 9.5 to 10.2

1 7897

What is the definition of water content or moisture content,what is the procedure going on w.c amalysis?

Cipla, KIYI,

1 11114

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Un-Answered Questions { Analytical Chemistry }

why require to do water content for drug product?

885

WHY pKa value is more important than pH value of the mobile phase in HPLC?

1813

about method developement in hplc

1762

what is mean by dissolution biowaiver study?

997

Why a1% value is used for some product ? What is the criteria for selection a1% value ?

2396

in sampling of raw material which side is pasted sampled labels

1888

which are the diffrent batches in the pharmaceuticals?

864

How to set analytical specification for combination products?

876

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

809

Why perchloric acid used for potentiometric titration

2735

What is the use of tlc and hplc? And when and where use?

1213

If we have 5 strength which is not dose proportinate and excipients also diffrent in each strength then how we can proceed for Force degradation? and excipient are same but not dose propotinate the how FD?

862

How to start the dissolution development for unknown tab?

1740

What is the principle of HPLC, GC, LCMS, GCMS,LC QQQ, GC QQQ, LC Q TOF and GC Q TOF. What are the applications and Specificity?

8919

If combination product how require to identify which imp is of which api?

868

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