Why is benzene extra ordinarily stable though it contains three double bonds?
2.
How would you convert the following compounds into benzene? (iii) Hexane
3.
Why is Wurtz reaction not preferred for the preparation of alkanes containing odd number of carbon atoms? Illustrate your answer by taking one example.
4.
Why is benzene extra ordinarily stable though it contains three double bonds?
5.
An alkene ‘$A$’ on ozonolysis gives a mixture of ethanal and pentan-3-one. Write structure and IUPAC name of ‘$A$’.
6.
Draw the cis and trans structures of hex-2-ene. Which isomer will have higher b.p. and why?
7.
Draw the cis and trans structures of hex-2-ene. Which isomer will have higher b.p. and why?
8.
Write chemical equations for combustion reaction of the following hydrocarbons: (i) Butane
9.
How will you convert benzene into (iii) p - nitrotoluene
10.
How would you convert the following compounds into benzene? (iii) Hexane
11.
Write IUPAC names of the products obtained by the ozonolysis of the following compounds : (ii) 3,4-Dimethylhept-3-ene
12.
Write IUPAC names of the following compounds :
(e)
13.
An alkene ‘$A$’ contains three $C-C$, eight $C-H$ $\sigma$ bonds and one $C-C$ $\pi$ bond. ‘$A$’ on ozonolysis gives two moles of an aldehyde of molar mass 44 u. Write IUPAC name of ‘$A$’.
14.
Propanal and pentan-3-one are the ozonolysis products of an alkene? What is the structural formula of the alkene?
15.
For the following compounds, write structural formulas and IUPAC names for all possible isomers having the number of double or triple bond as indicated : (a) $C_4H_8$ (one double bond)
16.
Write chemical equations for combustion reaction of the following hydrocarbons: (iv) Toluene
17.
What effect does branching of an alkane chain has on its boiling point?
18.
Write structures of all the alkenes which on hydrogenation give 2-methylbutane.
19.
How will you convert benzene into (ii) m- nitrochlorobenzene
20.
Write IUPAC names of the following compounds : (a) $CH_3CH=C(CH_3)_2$
