Ques 1.

Give the IUPAC names of the following compound

(i)  

H3C-CCH3-C≡C-CH3

(ii) CH₃CBR₂CH₃

(iii) HOOCCH₂CH₂CH2COCH₃

Ques 2.

Write the structure of the following compounds:

(i) Pentanedinitrile

(ii) N-ethyl-N-propylpropanamine

Ques 3.

Discuss the optical activity of the following molecules giving suitable diagrams.

(i) trans-dichloroethene

(ii) meso-tartaric acid

Ques 4.

Draw the conformations of 1,3-dimethylcyclohexane. Which of these conformations is more stable and why?

Ques 5.

Draw the possible modes of vibrations of  group present a molecule.

Ques 6.

Briefly explain the guidelines/ rules to predict the relative importance of resonance structures in different molecules/species of organic compounds.

Ques 7.

Define octane number. What are different factors affecting the octane number of a compound.

Ques 8.

Give examples of additives used to increase the octane number.

Ques 9.

What is Witting reactions? Give the mechanism of this reaction.

Ques 10.

How can you distinguish between terminal and internal alkynes using IR spectrum?

Ques 11.

How can you convert butane to 2-butyne.

Ques 12.

Which position of naphthalene is more active towards electrophilic substitution? Explain giving suitable structures.

Ques 13.

Give any two methods of preparations of pyrrole. Also write the reactions involved

Ques 14.

Write the resonance structures of pyridine-N-oxide.

Ques 15.

Discuss the reactivity of allylic and benzylic halides in nucleophilic substitution reactions.

Ques 16.

How will you prepare phenol from benzene? Give the sequence of the reactions involved.

Ques 17.

Give the preparation and use of nitroglycerin.

Ques 18.

Write the products of the following reactions of epoxides: (5)
 (i)  oxirane  + H₂O ---> OH + ____________
 (ii) oxirane +  CH₃OH  -----> OCH₃  + _____________
 (iii) oxirane  + RMgX  -------->  _____________  ------> H⁺/H₂O + ___________
 (iv) oxirane + heat ------------> _____________
 (v) oxirane + LIAlH₄  -------> _________

Ques 19.

Write chemical reactions for the following named reactions:

 (i) Etard’s reaction

(ii) Gattermann-Koch synthesis

(iii) Gattermann synthesis

(iv) Wacker process

(v) Friedel-Crafts acylation

Ques 20.

Write chemical equations and reaction conditions for any five methods of preparation of carboxylic acids.

Ques 21.

What is Michael addition? Explain giving suitable example and the mechanism involved.

Ques 22.

Discuss the reduction of alknoyl halides using different reagents. Write the reactions involved and the products formed.

Ques 23.

Explain Henry reaction by giving a suitable example.

Ques 24.

Write important uses of nitro compounds giving suitable examples.

Ques 25.

How will you differentiate between primary, secondary and tertiary amines using nitrosation reaction?

Ques 26.

Discuss the structure of starch giving the type of bonding and the components.