Chemistry 5 Marks Questions

Explain the deactivating and metadirecting effect of nitro group (-NO₂) in nitrobenzene.

Explain the structure of triple bond.

Explain the mechanism of sulphonation and Friedel Crafts reaction.

Explain the molecular orbital diagram of benzene.

Write short note on carcinogenic and toxicity of aromatic hydrocarbons.

Compare the acidic properties of alkane, alkene and alkyne and write reaction to represent the acidic nature of 1-alkyne.

Explain the following in contrast to alkynes: (i) Polymerisation (ii) Isomerisation (iii) Oxidation (iv) Ozonolysis

Explain various addition reactions of alkynes.

For electrophilic substitution reaction functional groups present in singly substituted benzene derivatives. Explain the directive effect and also explain their activating and deactivating nature on basis of resonance.

Explain the addition of following on benzene : (i) Chlorine (ii) Ozone (iii) Hydrogen

Explain following in contrast to benzene : (i) Nitration (ii) Halogenation (iii) Sulphonation (iv) Friedel Crafts reaction

Write the methods of preparation of benzene.

Explain the general mechanism of electrophilic substitution of benzene.

Explain in brief aromaticity.

Explain the stability of benzene by resonance and molecular orbital diagram.

Explain isomerism and nomenclature of alkynes.

Explain various methods of formation of alkynes.

Explain the structure of triple bond with diagram.

Write the mechanism of reaction of propene and HBr in presence of peroxide.

Explain the following: (i) Markownikov's Law (ii) Peroxide effect

Explain different types of oxidation reactions of alkenes with example.

Write short notes on the following: (i) Hydroboration of alkenes (ii) Polymerisation of alkenes

Explain various methods to form alkene.

Explain geometrical isomerism with the help of suitable example.

Explain different types of isomerism in alkenes with example.

Explain the following :
(a) isomerisation of alkanes
(b) aromaticity
(c) thermal decomposition

What is conformational isomerism? Explain it with the help of ethane.

Explain the mechanism of halogenation of alkanes.

Describe various method to form alkane.