Which statements from the list below are false?
1
The general formula of alkynes is CnH2n-2 where n is the number of carbon atoms in one molecule of the alkyne.
2
The unsaturated hydrocarbons are obtained mostly from petroleum by a process called cracking.
3
An unsaturated hydrocarbon in which the two carbon atoms are connected by a double bond is called an alkene.
4
The simplest alkene is ethene having the molecular formula C2H4.