Chemistry Interview Questions
Questions Answers Views Company eMail

What is the difference between Discriminating media and DPDM(Dissolution Profile with Different Media)

Natco,

6839

How can I develope method of dissolution by HPLC OR UV

1869

Give me details about dissolution , with name ?

EPCA,

1 2816

What is the range of UV & vis lamp in spectrophotometer. Dhaval patel

ECOlogics, Jubilant, Jubilant Organosys, SGS,

9 15346

As per USP what is RSD limit of volumteric solution of three replicate analysis

Orchid,

10 25089

how can delete the impurity in 1-(2:6 dichloro phenyl)-2-indolenone.and desolving the impurity in which solvent but does not desolve product in solvent.

1 2411

What is the pilot-plant in pharma sector.

Dr Reddys,

1 2676

What is blank titration of potentiometrically.

2 9721

process of Diclofenac sodium,IP.

1644

WHAT TYPE OF QUESTION ASK FOR POST SENIOR TECHNICAL ASSISTANT IN DRDO

DRDO,

7638

why we are using benzene, anyline in acetic anhdride assay titration method?

1547

which solution used for detecting factor of k.f.titroter except water

3 8641

in dissolution why pool sample needed? in which type of drug pool sample need?

Torrent Pharma,

2568

void volume is depending on column or not? if yes how will you depend?

Granules,

1 6688

what is difference between polarity and dipolemoment

Neuland,

3 8765


Un-Answered Questions { Chemistry }

Discuss the various isotopes of Protactinium and their roles in different fields of study.

99


what is the structure of DOWEX-50

4891


Explain Thiele's structure for benzene. What is the difference between thiele's structure and modern structure (resonance hybrid) of benzene?

4588


in monograph 7 imp are there but in vendor showing 5 imp do not req to include 2 imp for that what will be justification?

244


is it necessary to do HPLC calibration at wavelength 315nm if we are doing analysis at this wavelangth

1623






about method developement in hplc

1192


Write the structural formula for edta.

602


Explain how can you tell if there is a dipole moment or not?

549


how you confirm the assay method?

274


What is wave length?

527


What is photoelectric colorimeter?

610


Explain the difference in the modern periodic table and mendeleevs table?

546


what is classification of elemental impurities? what is risk assement in elemental impurities?

315


What should be the level/ Percentage of Arsenic in Arsenic free zinc.

1735


why require the ph, buffer during hplc mobile phase?

380