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        <div id="content-top1">Page 49 - index</div>
        <div id="content-top2">P. 49</div>
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    <pre style="white-space:pre-line"><code>8. ALIPHATIC HYDROCARBONS                          eLearn.Punjab

i) Acetaldehyde              ii) Benzene

iii) Chloroprene             iv) Glyoxal

v) Oxalicacid                vi) Acrylonitrile

vii) Ethane                  viii) Methyl nitrile

(b) Write a note on the acidity of ethyne.

Q. 24. (a) Compare the reactivity of ethane, ethene and ethyne.
        (b) Compare the physical properties ot alkanes, alkenes and alkynes.

Q. 25. How does propyne react with the following reagents.
        (a) AgNO3/NH4OH
        (b) Cu2CI2/NH4OH
        (c) H2O/H2SO4/HgSO4

Q. 26. A compound has a molecular formula C4H6, when it is treated with
excess hydrogen in the presence of Ni-catalyst, a new compound C4H10
is formed.When C4H6 is treated with ammoniacal silver nitrate a white
precipitate is formed. What is the structural formula of the given compound.

Q.21. (a) Identify A and B.

CH3CH2CH2OH ï£§Pï£§Cl5â†’ A ï£§Nï£§a/Eï£§theï£§râ†’ B

(b) Give the general mechanism of electrophilic addition reactions of
alkenes.

                                          49</code></pre>
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