Question 3
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) C4H8 (one double bond)
(b) C5H8 (one triple bond)
Question 4
Write IUPAC names of the products obtained by the ozonolysis of the following compounds:
(i) Pent-2-ene
(ii) 3,4-Dimethyl-hept-3-ene
(iii) 2-Ethylbut-1-ene
(iv) 1-Phenylbut-1-ene
Question 7
Propanal and pentan-3-one are the ozonolysis products of an alkene? What is the structural formula of the alkene?
Question 8
Write chemical equations for combustion reaction of the following hydrocarbons:
(i) Butane
(ii) Pentene
(iii) Hexyne
(iv) Toluene
Question 9
Draw the cis and trans structures of hex-2-ene. Which isomer will have higher b.p. and why?
Question 13
How will you convert benzene into
(i) p - nitrobromobenzene
(ii) m - nitrochlorobenzene
(iii) p - nitrotoluene
(iv) acetophenone?
Question 17
Write down the products of ozonolysis of 1,2-dimethylbenzene (o-xylene). How does the result support Kekule structure for benzene?
Question 19
Why does benzene undergo electrophilic substitution reactions easily and nucleophilic substitutions with difficulty?
Question 20
How would you convert the following compounds into benzene?
(i) Ethyne (ii) Ethene (iii) Hexane
Question 23
Out of benzene, m-dinitrobenzene and toluene which will undergo nitration most easily and why?
Question 25
Why is Wurtz reaction not preferred for the preparation of alkanes containing odd number of carbon atoms? Illustrate your answer by taking one example.