[" How will you bring about the following conversions: "],[[" (i) Ethanol to but-l-yne "," (ii) Ethane to bromoethene "],[" (iii) Propene to 1-nitropropane "," (iv) Toluene to benzyl alcoholop "],[(v)" Propene to propyne "," (vi) Ethanol to ethyl fluoride "],[" (vii) Bromomethane to propanone "," (vii) But-l-ene to but-z-ene "],[" (ix) 1-Chlorobutane to "n" -octane "," (x) Benzene to biphenyl "]]