General Chemistry Interview Preparation Guide
Download PDF

General Chemistry frequently Asked Questions by expert members with experience in General Chemistry. So get preparation for the General Chemistry job interview

27 General Chemistry Questions and Answers:

1 :: What is the process for separating the components of gunpowder?

First introduce water and then filter the
particulates out. The liquid would be mostly potassium
nitrate since there will be a finite amount of solubility
of the other 2 compounds. Next introduce carbon disulfide
and filter the carbon away from the soluble sulfur. They
would be cleaned up sufficiently enough i would think.

2 :: However ozone is heavier than oxygen still ozone is up there in sky why?

It's not that it's "staying up there", it's that it never
has a chance to fall. Ozone is FORMED up there, and it
breaks apart again before it has a chance to fall.

Ozone is formed when UV radiation hits oxygen (O2),
splitting it apart. Oxygen atoms hate to be alone, so they
recombine with an O2 molecule to make O3, ozone. Before the
ozone has a chance to fall, IT gets hit with MORE uv
radiation, turning it back into oxygen. Ozone just keeps
getting made and destroyed before it has a chance to fall.

3 :: When a glass rod is heated gradually and suddenly dipped in cold water, it cracks. What is the reason?? When a cool glass rod is suddenly heated, it cracks. Why?

When a glass rod is heated the molecules gains etnergy and
they will be in random motion. when it is suddenly dipped
in cold water, the glass molecules contact with water
gives its energy to the lower enrgy water molecule while
the molecules inside the glass with higher energy will
relese the energy randomly as a result it creates cracks
for more surface area, so that more energy can flow in
lower time.

Same thing happens when it cooled rod is heated.

4 :: pH is having unit?

NO BUT 1 TO 6 IS ACID 7 IS NUTURAL AFTER ALKALINE

5 :: Which is the best conductor of electricity?

silver is best conductor of electricity.

7 :: What is acidity of a base?

Number of OH- ions released by a base is the acidity of a base

9 :: What is kentchin? Is it real? As much info on it as possible?

hardest metal.
1 square metre of kentchin could with stand the heat of the
sun!