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Chemistry Interview Questions
Questions Answers Views Company eMail

Difference between c18

Apothecon, Dr Reddys, Intas, IPQA, SUN, Torrent Pharma,

6 52949

principle of UV , PDA , RI detector in HPLC

Dr Reddys,

8764

mahagenco syllabus for the post of chemist

MahaGenco, Unimarck Pharma,

6477

What is post run in hplc?

Cipla,

1 16967

Tell me something about Vitamin A test method by HPLC

Lupin,

2679

what is induction on electrical insulators

2321

How to choose Normal phase or Reverse Phase HPLC method Conditions for given sample?

PharmaZell,

3 14854

why the most API molecule are in the hydrochloride form?

1 9743

IF HPLC CALIBRATION FAILED THEN WHAT YOU DO

6 36792

Optical Rotation*0.9477*100*200] Assay Of dextrose= ________________________________ 99.8* 200 why Factor=0.9477

Claris Lifesciences, Inven Pharmaceuticals, Levo,

1 15613

what is column chromotography?

ONGC,

2 7719

How you will select the runtime in HPLC for a drug in method development.

Aurobindo, GVK, Lesanto Laboratories,

6 22174

If compound Pka is 5 then which buffer you will select ?

Avra, GVK,

5 16821

what is the difference between BDS and ODS Columens and both are same or not

Intas, IPQA, Micro Labs, Vasava Engineering Private Limited,

2 73665

difference between HPLC & LC-MS

Lambda,

9 46805


Un-Answered Questions { Chemistry }

What is similarity factor?

1207


What is the number of protons in an atom?

1057


What is dose dumping? why require to do?

952


we can use expired sample for validation and analyst qualification?

812


How many electrons does benzene have?

1035


Why we check moisture,ash & AIA in product

1885


How to synthesize methylene bisthiocyanate using CH2Cl2 and NaSCN?

3004


Define alum?

1097


What are the factors which affect corrosion? : Electrochemistry Corrosion

925


in dissolution if one bowl got 70 percent 2nd bowl got 80 percent and 3rd bowl got 90 percent then how proceed?

754


What are the electrodes used in potentiometer titration?

1022


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.

3129


write short note on stero electronic factor, steric control factor and product control factor

2052


why glutent are detected in the rice cereal baby food product even manufacturer claimed that they are using rice and milk only?we have using ELISA to do the test,and rice supposed not containing any glutent,rite?We already repeat the test so many times and it still detected.just wondering where the glutent came from?

2788


Principle of single pan analytical balance

5143