Chemical reaction in which heat is absorbed (hot) is called………reaction
a) endothermic
b) Exothermic
c) both a and b
d) none of these
Chemical reaction in which heat is
released (cools) is called………….reaction.
a) Endothermic
b) Exothermic
c) both a and b
d) none of these
When substance combines with oxygen
while burning, reaction is termed as.
a) Combustion
b) burning
c) Evaporation
d) Both a and b
Processing of breaking down of any substance into smaller substance by heating is called……
a) Decomposition
b) Evaporation
c) Thermal decomposition
d) melting
In the following figure, a chemical reaction is showing which type of the reaction?
NTS PET 24/08/2019 (1:30)
a) additional
b) Substitution
c) exothermal
d) endothermic
Natural gas is made up of compound
…………
a) Carbon
b) Methane
c) Ethane
d) None
