Petroleum ether can be used as

If a mixture of methyl iodide and ethyl iodide in equal proportions is treated with metallic sodium in dry ether,the number of possible products obtained will be ....................

Paraffin wax is

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

Which of the following has the maximum boiling point $(B.P.)$?

Normal butane is converted into isobutane by: