Carbon atom shows sp2 - hybridization in compound A and B. A decolourises alkaline KMnO4 solution, where as B cannot. A and B are
Propane and ethene
Ethene and Benzene
Benzene and Ethane
Propane and Ethene
Benzene will not remove colour of KMnO4 solution
In alkene (ethene) number of sp2 hybrid carbon atoms are