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

Which one of the Following is not Aromatic? 1)Cyclotetrane 2)Benzene 3)Napthalene 4)Anthracene

8 19152

what is the difference between simple distillation and differential distillation

1 10330

Describe your experience with analytical instrumentation?

Alembic, Apotex, Aurobindo, DLF, Enal Drugs, Lupin, Natco, Pharma,

3 39072

Do you know what Trace metal clean technique is?describe that technique?

Mylan, Nirma, Oil and Gas Jobs, Reddy Labs,

1 10021

Describe your experience with quality assurance and quality control analyses?

Aurobindo, Dr Reddys, MSC, Reddy Labs,

11 39236

Describe your field experience sample type collected,sample techniques,field measurements taken and equipment used?

Apex, BNM, Ranbaxy,

2704

Do you have experience with organic extractions or tissue digestions?

GVK Biosciences,

1 8100

How many stereoisomers of phenylpropylene oxide are there?

Mankind,

1 6691

How many isomers have the name bromomethylcyclopentane?

5 13667

Pure (S)-2-butanol has a specific rotation of +13.52 degrees. A sample of 2-butanol prepared in the lab and purified by distillation has a calculated specific rotation of +6.76 degrees. What can you conclude about the composition?

1 6760

Trimethylamine is a pyramidal molecule. What is the hybridization at nitrogen?

Bluepin,

5 18765

which functional groups are present in cortisone?

2 24182

How many degrees of unsaturation are there in benzene?

2 12914

What are the major products formed when acetic acid and ethanol are added to water and the pH is adjusted to 7.0?

3 7160

What organic compounds have the basic formula (CH2O)n?

8 80419

Un-Answered Questions { Chemistry }

what you do when compound having dwel wavelength?

750

Why is the role of glycerol & naoh?

1073

why use of sulfuric acid in roi test in pharmaceutical industry

2488

Can you provide an overview of the properties and characteristics of Protactinium and its placement in the periodic table?

656

what is the different in Total ash, sulphated ash, acid insoluble ash, alcoholic or non alcoholic ash?

10000

how to mesure a relation of assay by HPLC and purity in results?

2325

The rate constant for the second order reaction is 0.54/M.s at 300oC. How long (in sec) would it take for the concentration of NO2 to decrease from 0.62M to 0.28 M? 2NO2(g) 2 NO(g) + O2(g)

2597

Write the structural formula for edta.

1091

What are the constituents of cements?

1060

Why we use potassium dichromate in uv calibration Exact reason behind it??

1256

What is specific conductivity?

1098

WHAT IS THE USE OF STARTER ?????????

2425

WHAT IS THE PURPOSE WE USE HCL, CHOPPER, BURNER, MONOCHROMATOR in AAS? PLEASE EXPLAIN BRIEFLY

2607

How tripod is used?

1158

For water content determination, if the material is insoluble in methnaol and ethylene glycol mono methyl ether, what other diluent can we use.

1999

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