Class XI (Chemistry) Organic chemistry test

Test (Hydrocarbons)

1. Define the term homologous series.                                                                   (1)

2.  What are saturated and unsaturated hydrocarbons?                                           (1)

3. Give IUPAC name of the following organic structure:     

 a) (CH₃)₂CHCH(C₂H₅)CH₂CH₂CH₃

            b) CH₂=C(C₂H₅)CH₂CH₂CH₃

            c) (CH₃)₂C=CHC(C₂H₅)=CH₂

            d) CH₃C≡CCH(C₂H₅)₂

            e) (CH₃)₃CC≡CCH₂CH=C(CH₃)₂                                                                         (5)

4.         Write down the products of ozonolysis of 1,2-dimethylbenzene (o-xylene).

            How does the result support Kekulé structure for benzene?                             (2)

5.           In the alkane H3C CH= CH C(CH3)2 CH2 CH(CH3)2, identify 1°,2°,3° carbon

atoms and give the number of H atoms bonded to each one of these.                (3)       

6.       Write Friedel Crafts acylation reaction?                                                                 (2)

7.         Explain  Markovnikov rule.                                                                                   (3)

8.  Write structures of the following compounds                                                             (4)

(i) 2,8-Dimethyl-3, 6-decadiene;

(ii) 1,3,5,7 Octatetraene;

(iii) 2-n-Propylpent-1-ene;

(iv) 4-Ethyl-2,6-dimethyl-dec-4-ene;

9.  Define

(a)    inductive effect, (b) electromeric effect, (c) resonance                             (5)

(d) hyper conjugation. (e) geometrical isomerism