Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

What is the difference between drug product and drug substance?

Apotex,

1 468

What is excipient in drug product?

Lupin,

1 411

What is GF254 means in TLC plate?

1 317




What is zero water in TOC Analysis?

Orchid,

1 241

What is the name of the detector used in TOC?

Lupin,

1 383

What is NPOC method in TOC?

1 338

What is FDA form 482c?

Lupin,

1 425

What are the class-1 residual solvents listed in ICH guidelines?

1 416




What are the concentration limit for class-1 residual solvents in ICH ?

Lupin,

1 462

How does HPLC Calculate Void volume?

Lupin,

1 519

What does theoretical plates number mean?

1 379

How do you increase the number of theoretical plates?

Cipla,

1 523

Why red HgI2 added during starch preparation?

1 438

What is the Formula for coreletion coefficient in plhplc calibration

244

How to calculate coreletion coefficient

272


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Un-Answered Questions { Analytical Chemistry }

about method developement in hplc

467


how a particular wavelength can be different for a particular compund while analysing by uv and by HPLC.

1172


what is the different in Total ash, sulphated ash, acid insoluble ash, alcoholic or non alcoholic ash?

7456


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

1046


How to do regeneration of Metacarb Pb plus column?

1353






what is %labelled amount in content uniformity of dosage unit and its calculation?

3711


What is column in chromatography?

898


i want model written test paper for the post of analyst in IOCL(indian oil corporation ltd) any one pls help me

1486


how to calibrate hplc & gc

3197


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

315


what is turbidimetric titration?Give 2 examples.

1201


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

287


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

384


Why Ethanol is Used for Standardization of GC Head space?

2721


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?

6329