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 5287

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

1 3398

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 4199

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

1 9195

Why do we feel chilly in damp clothes ?

1 4155

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

1 4236

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 3135

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

1 3776

Why is sometimes a succession of echoes heard ?

1 3842

Why is an echo not heard in a small room ?

3 10698

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

1 3869

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

Infosys,

1 6059

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

2 4198

Why has every parachute a hole in the centre ?

1 3897

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

1 3830

Un-Answered Questions { Chemistry }

what does 50 denote in dowex 50 ????

2570

Why is acetic acid added?

1165

What is wave length?

981

An atom has 18 protons and 22 neutrons. Tell me its mass number?

994

Name the element which was used to make the first atomic bomb?

1068

Why we used in n-butyl acetate water content terminology while in ethyl acetate we used moisture content terminology?

1856

If suppose 10 methods of dissolution given in pharmacopoeial for single content product then which method out of 10? or all 10 require to follow?

986

We use hicrome 10 cxs column in hplc analysis....pls tell me.. what is the meaning of 10 cxs?

1717

why digestion require in icpms?

770

Why is eriochrome black t indicator cannot be used in this experiment?

1171

The reaction of an acid with an alcohol to form an ester and water. What is the process?

1027

identification is for unknown? qualification for known? reporting for LOQ?

725

Protactinium is a rare and highly radioactive element. How is its radioactivity utilized in various scientific and industrial applications?

654

Name the three elements which are forms carbohydrates?

1022

Explain why acetic has less conductivity than hcl?

1039

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