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Chemistry Interview Questions
Questions Answers Views Company eMail

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

Aurobindo,

1 8318

What is UV cut off?

Sanmar,

1 2701

What is the importance of sulphated ash test?

 1 4016

What is impurities in pharma analysis?

 1 1892

What are the different zones in stability according to ICH?

Apotex,

1 2146

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

Cipla,

1 2421

How does GC did work?

 1 1811

Which detector is used in uv-vis spectrophotometer?

Glenmark,

1 9113

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

Lupin,

1 1832

What is the difference between ROI & sulphates ash?

 1 2507

What is difference between NDA & ANDA ?

Alembic,

1 3344

What is Rf value& Rx value in TLC?

Abbott,

1 8051

What are the six USP melting point reference standards?

 1 2085

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

Apotex,

1 2106

What is the difference between drug product and drug substance?

Apotex,

1 2334

Un-Answered Questions { Chemistry }

What is bed worth rule? : Electrochemistry Corrosion

514

How is measurement of ph made?

585

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

2093

What is the main difference between ODS1 and ODS2 Hplc column.

4475

Name the three elements which are forms carbohydrates?

591




How is arsenic produced?

650

how to get accurate result for Residue on evaporation in purified water

1124

What do you mean by redox reaction? : Electrochemistry Corrosion

463

how much mass should be there in volumetric flask while in preparation of sample for assay? 

2059

What is kentchin?

596

Explain what is the chemical formula of detergent?

547

What is wave length?

552

what is mean by 40 in the dissolution basket mesh size?

293

could negative ions be produced by bombardment process in mass spectrometry?

1294

what is mean by covalidation

320

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