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Chemistry Interview Questions
Questions Answers Views Company eMail

WHAT IS THE CRITERIA FOR SELECTION OF TIME OF DISSOLUTION AND THE MEDIUM OF DISSOLUTION?

GVK,

2633

why do we adjusted ph in the mobilphase

Cipla, Dr Reddys, Reddy Labs,

9 25612

how are 31P NMR resonance differentiate phosphorous and phosphoric acid

1 4614

How to develop the method when we have very low amount of impurity?

2 8433

If we have 120 minutes run time method for HPLC and you wan to decrease the Run time so what should you do??

6 14067

Wath is the differenc between two column HPLC wich have the samme support , lenth , pore size, etc.. But different name .for exemple : Spherisorb / lichrosorb

NDA,

2 8165

WHAT IS PVT TEST IN DISSOLUTION TEST , WHAT IS PVT SIGNIFICANCE AND HOW IT IS PERFORMED ?

1 7640



2399

How you will select column for HPLC development depends on nature of compound and how it will work explain in brief?

3 11094

What is the role of SO2,I2, Methanolic hydroxide and any base in Karlficher titration

Medley Pharmaceuticals,

2 9404

The boiling point of 1,3 butadiene is -4.4 DC & the boiling point of Pentane is 36.1 DC. Then how come Pentane elute before 1,3 BD in GC analysis?

1 5549

what is the relation between Total organic carbon and Chemical Oxygen demand?

2992

What is Arsenic Test?

Flamingo Pharmaceuticals,

2562

What is the difference between Optical rotation and Spcefic optical rotation

IPCA, Matrix,

2 13697

why we use sodium salicylate in uv light calibration at TLC chamber

Aurobindo, Lee Pharma,

1 9170


Un-Answered Questions { Chemistry }

How do we quantify crystaline and amarpous forms by using (NMR, XRD)spectroscopic techniques? Which any others instruments are useful for this quantification? explain

2441


Name the element which has the following ground-state electron configuration: 1s22s22p6?

1034


Explain the differences between organic and inorganic chemistry?

1170


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

2456


all types of questions asked at the cipla interview

4722


What are the factors that affect the viscosity of a liquid?

1070


Protactinium is part of the actinide series. Discuss the significance of this series and its implications for nuclear chemistry.

791


what is the principle involved in turbidometry and nephelometry ?

4208


what is the difference between elctrefining and electrolysis?

2309


As a researcher working with Protactinium, what areas of study or applications would you be most interested in pursuing, and why?

631


i am going to face exam for the post of executive trainee (chemistry) in M.P Power generation company,i want to know the level of exam ,type of questions can be asked,and about any book whigh i can refer.

2418


on the basis of bcs class how to proceed the solubility?

834


describe the lewis dot structure of Mg2+?

12059


For standardization of volumetric solutions, acceptance limit for concentration is considered as 10% of nominal concentration and %RSD as NMT 0.2% (for appropriate no. of replicates). But , if %RSD has not met, what should be further action?

1970


Define oxidation potential and reduction potential? : Electrochemistry Corrosion

1268