Only two isomeric monochloro derivatives are possible for:

Explain the isomerization reaction of alkanes.

Select the chain propagation steps in the free-radical chlorination of methane.
$(1) \, Cl_2 \to 2Cl^{\bullet}$
$(2) \, Cl^{\bullet} + CH_4 \to CH_3Cl + H^{\bullet}$
$(3) \, Cl^{\bullet} + CH_4 \to CH_3^{\bullet} + HCl$
$(4) \, H^{\bullet} + Cl_2 \to HCl + Cl^{\bullet}$
$(5) \, CH_3^{\bullet} + Cl_2 \to CH_3Cl + Cl^{\bullet}$

Identify the molecular formula of an alkane that exhibits only two different structural isomers.

In the reaction $CH_3-Br + 2Na + Br-CH_3 \to$,the product is called

Which of the following has the highest octane number?