Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

What is differences between the Instrument and Equipment

Aurobindo,

2 778

Why dissolution test apparatus calibration with salycilic acid tablets was stopped by FDA&USP from the year of 2009?

Aurobindo,

1 684

What is UV cut off?

Sanmar,

1 750




What is the importance of sulphated ash test?

1 631

What is impurities in pharma analysis?

1 471

What are the different zones in stability according to ICH?

Apotex,

1 645

According to ICH,India is coming under which climatic zones?

Cipla,

1 715

How does GC did work?

1 364




Which detector is used in uv-vis spectrophotometer?

Glenmark,

1 712

Why chromic acid wash is not recommended by USP for glassware cleaning?

Lupin,

1 451

What is the difference between ROI & sulphates ash?

1 648

What is difference between NDA & ANDA ?

Alembic,

1 776

What is Rf value& Rx value in TLC?

Abbott,

1 618

What are the six USP melting point reference standards?

1 468

What is the size of capillary tube used for analysing melting point?

Apotex,

1 512


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Un-Answered Questions { Analytical Chemistry }

Why sodium hydroxide used for maintain pH of phosphate buffer

1093


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

2240


How would you decide dissolution medium for NCE compound of class I drug

862


Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...

420


While performing TOC sst analysis Zero shift disabled & sample analysis zero shift enabled why?

1259






in gas chromatography what is the difference between gas flow rate and average linear velocity ?

1130


what is the importence and role of LCMS and LCMS/MS and their applications? which type of compounds are analysis by lcms?

2414


How you develop a method in HPLC?

1416


What is control room temperature and which guide line says?

482


In dissolution of tablets/capsules elaborate the Dissolution limit 20.0% to 60% Q in 30 minutes.

883


Which type of column should i use to check the purity of high molecular weight protein using HPLC reverse phase column chromatography? Hi everyone. I wanna to check the purity of high molecular weight protein (collagen) with MW of ~130 kDa using a HPLC. I know C18

769


How can we confirm the HPLC column is end-capped or not? Is it possible to identify by physical appearance?

1977


in dissolution in one tablets two molecule one is losartan & second is HCTZ losartam is complies in s1 stage & hctz is complies in s2 stage then how to report result losartan s1 stage result or losartan s2 stage result

1016


What are the primary considerations in extractables and Leachables ?

1121


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

1088