Formation of ethylene from acetylene is an example of :
Elimination reaction
Substitution reaction
Addition reaction
racemisation reaction
CH ≡ CH+H2 → CH2=CH2
Two things are adding up.
Therefore, it is an addition reaction.
CH2=CH2 + H2 → CH3-CH3 is an example of:
Toluene reacts with a halogen in the presence of iron (III) chloride giving ortho and para halo compounds. The reaction is
(a) electrophilic elimination reaction
(b) electrophilic substitution reaction
(c) free radical addition reaction
(d) nucleophilic substitution reaction
Explain the following reaction with one example each : (i) Substitution reactions (ii) Addition reactions (iii) Combustion reactions (iv) Oxidation reactions