The reaction in which there is only
one reactants, which must be a compound is
a) Decomposition
b) Displacement
c) Synthesis
d) None of these
Some compounds on heating decompose to simpler compound or elements. This type of reaction is called: NTS DM -----6/2/2021
a) additional reaction
b) Replication of DNA
c) decomposition reaction
d) Process of respiration
………………reaction is a reaction in which one element is substituted for another element in a compound.
a) single displacement
b) synthesis
c) decomposition
d) none of these
…………..reactions occur when a part of two ionic
compounds are
exchanged and make two new components.
a)
single displacement
b) synthesis
c) decomposition
d) Double
displacement
The heat evolved or absorb during a
chemical reaction is called……………..
a) Heat of reaction
b) exothermic
c) Endothermic
d) Heat energy
On the basis of the change in energy, chemical reactions can be classified into……….types.
a) two
b) three
c) four
d) five
