Chemistry Interview Questions
Questions Answers Views Company eMail

what is procedure of actual procedure for registration of drug?

1462

Can you please give a suitable definition and an example for understanding the words purity and potency.

Cipla, Malladi Drugs and Pharmaceuticals, Reddy Labs,

6 9479

What is column in chromatography?

Chembond Chemicals,

1765

Which Pharmacopiea follow calibration of HPLC,GC

Bayer, Reddy Labs,

3 8976

Why Holium cholorate used in UV Spectro photometer?

Reddy Labs,

7 9746

why we get negative values in uv when i placed sample which has some concetration but not in standard

Nirma,

1 4621

What is difference between LVT and RVT Viscometer?

Reckitt Benckiser,

6452

Why water not directed by FID detector 

Amoli Organics, Lupin,

2 5455

what is definition of validation? which components are followed give detail?

1833

how the compound separate in coulunm,explain

Wockhardt,

1949

What is the principle of HPLC?

Cipla, Lupin,

3 8867

Why methanol & acetonitrile is mostly used for hplc analysis?

DRL,

2 13419

Explain about empower software of analysing?

DRL,

1 5089

why we use Dichlorobenzene.nitrobezine.t-butyldi sulhate.for calibration of gc Head space

Raks Pharma,

1785

NIR wave length range how much

Aurobindo,

3 3726


Un-Answered Questions { Chemistry }

Please give idea about method development for cleaning method and how maco level establish

279


Why ph scale range is 14? Why it is not less or not greater than 14?

679


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

575


we shall use Dichloromethane in last stage of API.

2628


Examine samples of ldpe (sandwich bag, squeeze bottle) and hdpe (milk jug, grocery bag). What are some of the differences in the physical properties of these substances? : Polymer Chemistry

732






Explain how do you extract ephedrine from a mineral block?

578


hi friends, dis is ramana reddy.i have been workining in bulk drugs as QC chemist.i would like 2 change d company.but our company didn't give d OFFER LETTER,APPOINTMENT LETTER,PAY SLIP.if any body has these documents along with sample RESUME,pls send 2 my mail id i.e ramanareddy.sdpl@ymail.com

2462


What is the formula to determine the concentration of M of a solution given the % transmittance? Use %T = 43.7 as an example.

2122


how can give the expiry period and restadardisation of volumetric solution

2059


Protactinium has potential applications in nuclear reactors. Could you elaborate on its role in enhancing reactor efficiency or safety?

155


what is the purpose of using cyclhexane in synthesis?

3525


Why is ammonia solution added while preparing edta solution?

856


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?

271


What is the metal used to extract copper from the solution of copper sulphate?

661


What is column in chromatography?

1765