Give reasons for the following :
(i) Methane does not undergo addition reactions, but ethene does.
(ii) Ethyne is more reactive than ethane.
(iii) Hydrocarbons are excellent fuels.

Give reasons for Methane does not undergo addition reactions, but ethene does.

Give reasons for the following in one or two sentences : i. Methane does not react with chlorine in dark.

Give reasons for the following in one or two sentences "Nitrobenzene does not undergo Friedel-Craft's alkylation."

Give reasons for the following : (i) Where R is an alkyl group, R_(3)P=O" exists but "R_(3)N=O does not. (ii) PbCl_(4)" is more covalent than "PbCl_(2). (iii) At room temperature, N_(2) is much less reactive.

Give the structural formula for the following: (i) Methanoic acid (ii) Ethanal (iii) Ethyne (iv) Acetone (v) 2-methyl propane.

Give decreasing order of the following towards NA reaction. I. II. III. IV.

Ethanal is more reactive towards nucleophilic addition reaction than propanone. Why ?

Assertion : Phenol undergoes Kolbe's reaction whereas ethanol does not . Reason : Phenoxide ion is more basic than ethoxide ion .

Give balanced chemical equations for the following conversions : (i) Ethanoic acid to ethyl ethanoate. (ii) Calcium carbide to ethyne. (iii) Sodium ethanoate to methane.

Give reasons for the following: (i) tert-buty lbenzene does not give benzonic acid on treatment with acidic KMnO_(4) . (ii)Normally, benzene gives electrophilic substitution reaction rather than electrophilic addition reaction although it has double bond.