A special group of non-metals that do not react chemically is _______
Petroleum gas
Noble gas
Methane gas
Coal gas
Which of the following is suitable for gas is
The movement of particle is restricted.
The molecules are far apart
The molecules are very closer
None of these
A soft metal is
Zinc
Copper
Mercury
Sodium
A non - metal with lustre is _____
Iodine
Bromine
Carbon
Who suggested each element composed of atom
Rutherford
Lavoisier
Faraday
Dalton
Diffusion takes place more in
Ice
Vapour
Stone
Diamond
Sound travel fastest in
Solid
Liquid
Gas
Water
Which of the following is a liquid metal?
Potassium
The temperature at which a liquid changes to gas is
Boiling point
Freezing point
Melting point
Turning point
The system to use chemical symbols was proposed by
Berzelius
