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Chemistry Interview Questions
Questions Answers Views Company eMail

How we develop a method by HPLC for unknown compound,if we got three peaks with same response then how we can find out which one is our desired compound's peak without taking help of LC MS.

Apotex, Kemwell,

4 15006

In case of dissolution test, if there is variation within 6 individual units however the batch is complying as per S1 criteria, is it necessary to do investigation for the same? What should be the criteria for such variation?

2 5641

What is the difference between bulk property detectors and Solute property detectors vivimed labs limited

3 17556

IF THE COMPOUND PKA IS 5.3 WHY WE ARE ADJUSTING PH+/-2 OF THE COMPOUNDS PKA. WHAT IS THE CONDITION

Dr Reddys, Reddy Labs,

2 10435

What are the limits for uniformity dosage content for tablets and capsules

Micro Labs,

5 23181

WHAT IS THE USAGE OF REFRACTIVE INDEX IN PHARME FIELD

3 9983

IN DISSOLUTION TEST S1AND S2 AND S3 CONDITIONS ALL ARE FAILED THEN WHAT IS THE DESSICION U CAN TAKE

Cipla,

12 28623

Why potassium hydrogen pthalate is used for perchloric acid And naoh. Why it is used for both acid and base

Vijayasri Chemicals,

6 31402

what are the normalisation, internal standard and external standerd methods in HPLC.

GVK,

2 14559

what is the experiment to find out the diffrence between energies of various conformal of cyclohexane?

1 3969

is ther any guidline is available for limt of peak fronting.and what is the limt of peak fronting.

2 11937

how can you define the PH

Dr Reddys, Matrix, Piramal Healthcare, Reddy Labs, Sun Pharma,

17 23300

how would you determine the acceptance criteria for cleaning validationof product A for product B?

Cipla, Cypher Solutions, Torrent Power,

1 7613

what is inorganic chemistry?

Indian Navy, SoftSol,

4 7923

How can we konw that the HPLC column is endcapped? Is it possible to identify visually without COA?

JBCPL,

2 10402


Un-Answered Questions { Chemistry }

What is equivalent conductivity?

1220


what things are suitable for investigatory project?

2732


Discuss the role of Protactinium in accelerator-driven systems and its potential for transmutation of nuclear waste.

675


Discuss the potential medical applications of Protactinium isotopes in cancer treatment or imaging techniques.

578


What is glacial acetic acid? What are its uses?

1069


In HPLC (Waters) software Empower1,2 &3 what is the updation for each version

3032


How to know the estimated LOQ concentration in ppm

1213


How would you describe the orientation of the ligands around the zr center in the homogeneous zirconium catalyst? : Polymer Chemistry

1014


Is cyclotetrane aromatic?

1288


why we should take dst factor for below 1%moisture samples

2666


what is procedure of actual procedure for registration of drug?

2012


what is NIR wave length

1432


what is the importance of peak purity in HPLC and how we can calculate through manul(not software)?

4488


What is the requirement for brazil in the analytical method vslidation comparr to ich?

782


Why purity angle should be less than purity threshold in peak purity

4247