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 18770

what is the difference between simple distillation and differential distillation

1 10209

Describe your experience with analytical instrumentation?

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

3 38809

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

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

1 9882

Describe your experience with quality assurance and quality control analyses?

Aurobindo, Dr Reddys, MSC, Reddy Labs,

11 38852

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

Apex, BNM, Ranbaxy,

2648

Do you have experience with organic extractions or tissue digestions?

GVK Biosciences,

1 8011

How many stereoisomers of phenylpropylene oxide are there?

Mankind,

1 6590

How many isomers have the name bromomethylcyclopentane?

5 13432

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 6597

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

Bluepin,

5 18536

which functional groups are present in cortisone?

2 24027

How many degrees of unsaturation are there in benzene?

2 12792

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

3 6986

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

8 80048

Un-Answered Questions { Chemistry }

What is fluidity of a liquid?

1034

when we talk about change in entropy we consider total entropy means of surround +entropy of system but when we talk about change in Gibss free energy we consider entropy of system.explain with reason.

1984

What is the brigg's raucher reaction?

2286

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

1193

My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards

1546

4. Describe the operation of the Craig apparatus. Chapter.3 Equilibrium Processes in Separations

2662

What is similarity factor?

1146

Which is the best conductor of electricity?

980

Why are olefins (alkenes) good monomers for polymerization reactions? : Polymer Chemistry

1331

Why ph scale range is 14? Why it is not less or not greater than 14? Solution of hcl or hydrogen containing liquid has a ph. But if the solution is kmno4 here nothydrogen power does it ph?

1106

Which parameters require to do in tech transfer?

681

Suppose we prepared pH buffer solution in lab.and calibrate against NIST solution, and same shall going to used upto 30 days. is it possible to stable pH and appearance? suggest?

1838

if identification threshold crosses the limits then what next step?

798

mode of absorption in alimentary canal?

2337

In HPLC Calibration, On which basis RSD Limit of noise test is fixed (NMT 33.0 % )

3427

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