Old Exam Papers June 2012 (Set 2)

(b) How will you obtain starting with chlorobenzene :
(i) Phenol
(ii) Benzoic acid
2+2
DyksjkscsUthu ls izkjEHk djrs gq, fdl izdkj izkIr
djsaxs %
(i) QhukWy
(ii) csUtkWbd vEy
2+2
9. (a) What happens when acetylene is oxidised with
alkaline KMnO 4 ? 4
D;k gksrk gS tcfd ,lhfVyhu dks {kkjh; KMnO 4 ds
lkFk vkWDlhÑr fd;k tkrk gS \ 4
(b) How can methyl iodide be converted into
acetylene ? 3
esfFky vk;ksMkbM dks ,lhfVyhu esa fdl izdkj ifjofrZr
fd;k tk ldrk gS \ 3
(c) Identifying the main product A complete the following
reactions :
H SO /HOH
2 4
(i) CH CCH A
3
Hg2+ , 800C 200 8 CH-02
fuEufyf[kr ds e/; foHksn dhft;s %
(i) eslks ;kSfxd ,oa jslhfed feJ.k
(ii) foU;kl ,oa la:i.k
2+2
3. (a) Describe E and Z nomenclature method of
geometrical isomers giving suitable examples.
mi;qä mnkgj.k nsrs gq, T;kferh; leko;okas ds ukedj.k
dh E ,oa Z i)fr dk o.kZu dhft;sA 6
(b) Write a short note on asymmetric synthesis. 4
vlefer la'ys"k.k ij y?kq fVIi.kh fyf[k;sA 4
4. (a) Explain the mechanism of Wurtz reaction. 3
oqVZ~t vfHkfØ;k dh fØ;kfof/k le>kb;sA 3
(b) Write short note on strainless rings. 3
foÑfrghu oy;ksa ij laf{kIr fVIi.kh fyf[k;sA 3
(c) Differentiate between transition states and
intermediates. 2
laØe.k voLFkk ,oa e/;orhZ ds e/; foHksn dhft;sA 2
CH-02 3 PTO
6