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Chemistry Interview Questions
Questions Answers Views Company eMail

What is difference between Chromatographic purity and Related substances analysis?

3 23517

Why we are using the methanol in Kf titration?

Reddy Labs,

6 21918

What is difference between Potency & purity

3 15218

how to hplc calibrated

Dr Reddys, Glochem,

4 52892

state the principle of gas chromatography?

5 13894

Why noise test is performed at 254 nm in calibration of HPLC system?

4 18366

some compound havving uv region but not give much more response during hplc analysis

2 7564

I have got selected for Aurobindo Pharma AR&D, HR person is asking me to sign in agreement. can I join?

Aurobindo,

19 44628

Why sulfuric acid is used in sulphated ash / residue on ignition test.

CS Pharmaceuticals, Dr Reddys, GVK, HPLC, Micro Labs, Samrudh, Watson Pharmaceuticals, Wings Customer Care,

9 78646

what are the basic requirement for the WHO audit?

BioPlus,

1 9229

What is the thickness of polystyrene film?

Pharmaffiliates Analytics and Synthetics,

8 19594

why is their exotherm while addition of reducing agents in reduction reaction?

2359

During Validation study, Recovery is passing at all levels but Linearity is failing. Justify?

Mylan, Torrent Pharma,

1 5191

What is Stray light ? & what is the IMP of this

2 10253

how can I make the copper get white bye any salt or acit?

2221


Un-Answered Questions { Chemistry }

What is paint? : Electrochemistry Corrosion

1054


What are the types of corrosion? : Electrochemistry Corrosion

1015


What is split ratio in Gc? Splitless? how requirr to select?

904


What are the products formed after cod analysis?

1341


What is wave number?

1131


What are the challenges and opportunities associated with handling and storing Protactinium due to its radioactivity and scarcity?

653


Why dissolution test is not performed in all of the products

2543


how to set sample and standard concentration in RS method?

917


In which situation we require to analytical method validation of excipient?

803


Discuss the role of Actinium in neutron sources and its contribution to scientific research and advancements.

637


In BP2013, Loperamid HCl monograph. Assay by titration with 0.1N sodium hydroxide using hydrocloric acid 0.01N and reading the volume added between the 2 points of inflexion. I have a question that if the diluent solvent is ethanol is certainly consumed a amount of volume of titrant, so this volume must be eliminated on the result calculation or not apart from first point which is subtracted above.

3132


Hi sir if any product monograph not given known impurities (may be 5 impurities) specifications then how we require to proceed for inhouse formulation?

710


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

1774


How to start the dissolution development for unknown tab?

1692


Do all explosions produce carbon dioxide or carbon monoxide?

1125