Which are known as combustible substances?
Reactants
Fuels
Catalysts
Products
A chemical process in which a substance reacts with oxygen to give off heat is called
Combustion
Addition
Substitution
Thermal cracking
Certain substances burn rapidly and produces heat and light. Such combustion is known as
Slow combustion
Rapid combustion
Good combustion
Complete combustion
Which of the following gas produced can kill persons sleeping in a closed room where coal is burning?
Carbon monoxide
Carbon dioxide
Oxygen
Hydrogen
The substances which have very low ignition temperature and can easily catch fire with a flame are called
Conducting substances
Flammable substances
Inflammable substances
Non conducting substances
In which reaction, a large amount of gas is formed?
Explosion
Burning
Oxidation
The lowest temperature at which a substance catches fire is called its
Inversion temperature
Ignition temperature
Boiling temperature
Freezing temperature
The amount of heat energy produced on complete combustion of 1kg of a fuel is called its
Calorific value
Efficiency
Heat capacity
Specific heat capacity
The substances which vaporize during burning gives
Heat
Flame
Carbon
Which of the following poisonous gas is produced as a result of incomplete combustion?
