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

Why is salt thrown on the frozen road ?

2 5292

Why a hot day in Calcutta causes more discomfort than are equally hot day in Delhi ?

1 3400

When the heat rays from the sun area focused on a piece of black cloth by means of a lens, the cloth catches fire. Why ?

1 4205

Why cooling is produced when a wet ?khus khus? screen is hung on the doors and windows ?

1 9197

Why do we feel chilly in damp clothes ?

1 4164

In winter, on a cold morning, the cement feels colder to the foot than a carpet. Why ?

1 4238

While standing on railway platform and heating the whistle of an engine coming towards us , we hear the sound increasing; bit when the engine is receding from us it appears to fall why ?

1 3141

Why does a freely supended magnetic needle always point North and South ?

1 3779

Why is sometimes a succession of echoes heard ?

1 3848

Why is an echo not heard in a small room ?

3 10710

What are the soldiers in an army, while crossing a bridge ordered to go out of step?

1 3873

We see the sun before it rises above the horizon in the morning. Why?

Infosys,

1 6068

Why do eye-glasses become fogged, when the wearer comes form the cold outdoors into a warm room ?

2 4204

Why has every parachute a hole in the centre ?

1 3904

Why is a halo formed round the moon, when the sky is clear ?

1 3833

Un-Answered Questions { Chemistry }

Explain what are enzymes?

1169

how to calculate elemental impurities?

1039

In the isomers,enantiomers give the only physical properties present such that no chemical properties present.

2227

Explain the process of obtaining Protactinium from its primary sources and its purification methods.

667

Explain how do you separate the colors of ink?

970

Protactinium-233 can be bred from Thorium-232. Describe the process of breeding Protactinium-233 and its significance for nuclear fuel production.

642

How to compare XRD graphs against standard and carry polymorpism study of API's by powder XRD method?

3871

Atactic polypropylene is always produced with the [cp2zr(r)]+ catalyst. Explain this on the basis of molecular-level interactions. : Polymer Chemistry

1099

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

1214

What is the difference between a heterogeneous and a homogeneous catalyst? What are some of the advantages of homogeneous catalysts? : Polymer Chemistry

1013

which are the sizes of capsules?

984

What is the formula you will use to calculate how many millilitres of 5.5 m naoh are required to prepare 400 ml of 1.5m naoh?

1016

Define what is avogadro’s law?

1079

if rsd failed then what require to do?

847

What is the Formula for coreletion coefficient in plhplc calibration

1841

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