Chemistry Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

General Chemistry (478)
Chemistry AllOther (190)

Chemistry Interview Questions

Questions Answers Views Company eMail

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

GVK,

2576

why do we adjusted ph in the mobilphase

Cipla, Dr Reddys, Reddy Labs,

9 25323

how are 31P NMR resonance differentiate phosphorous and phosphoric acid

1 4525

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

2 8304

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

6 13849

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 8068

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

1 7551

2319

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

3 10978

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

Medley Pharmaceuticals,

2 9275

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 5452

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

2918

What is Arsenic Test?

Flamingo Pharmaceuticals,

2500

What is the difference between Optical rotation and Spcefic optical rotation

IPCA, Matrix,

2 13555

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

Aurobindo, Lee Pharma,

1 9037

Un-Answered Questions { Chemistry }

mahagenco syllabus for the post of chemist

6476

why xterra column require to use at higher ph?

917

What group of elements were called the inert gases?

1118

"Co-polymers" consist of two different monomers ("a" and "b") joined in an alternating fashion (ababab...). Block co-polymers also consist of two different monomers, but in this case blocks of polymer containing only a units are joined to blocks of polymer containing only b units (aaaaabbbbb...). How might block co-polymers be synthesized? : Polymer Chemistry

1092

why require to do water content for drug product?

826

naphtha and hexane mixture can be used a fuel or not

2455

Explain why do some medications contain hcl?

1148

hi i am siva icompleted m,sc in organic chemistry in 2008&working as alecturer can u send me the interview qusetions with answers . i expected that i got 135 - 140 marks is there any chance to get selection my interview is on may 7th 2010

2128

how you start RS method development when for new product?

721

How are the waters classified based on the degree of hardness?

1149

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

2233

Why to use propyl paraben in HPLC gradient calibration

7481

Which organic compound is used as a fuel in jet air crafts?

1250

State beer-lambert’s law.

1144

how can I make the copper get white bye any salt or acit?

2208

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