Chemistry MCQs

Question 1

Identify the metal which is non toxic in nature.

Accepted Answer

Gold

Answer

Chromium

Answer

Cadmium

Answer

Cobalt

Question 2

Iron rusts quickly in

Accepted Answer

Sea water

Answer

Rain water

Answer

Distilled water

Answer

River water

Question 3

Mercury is a :

Accepted Answer

Liquid metal

Answer

Solid metal

Answer

Solid non-metal

Answer

Liquid non-metal

Question 4

The lustre of the metals is because of

Accepted Answer

Reflection of light due to the presence of free electrons

Answer

High density, due to closed packing of atoms

Answer

High polish

Answer

Absorption of light due to the presence of cavities

Question 5

The non-metal found in the liquid state is

Accepted Answer

Bromine

Answer

Nitrogen

Answer

Fluorine

Answer

Chlorine

Question 6

Which among the following is liquid non-metal ?

Accepted Answer

Bromine

Answer

Mercury

Answer

Water

Answer

Alcohol

Question 7

Metal are good conductors, because

Accepted Answer

They contain free electrons

Answer

The molecules in them are very close to each other

Answer

The molecules in them collide very freely

Answer

They contain reflecting surface

Question 8

The first metal used by a man was

Accepted Answer

Copper

Answer

Silver

Answer

Bronze

Answer

Brass

Question 9

White phosphorus is generally kept under

Accepted Answer

Water

Answer

Alcohol

Answer

Glycerine

Answer

Kerosene oil