Aligarh Muslim University (AMU) 2010 B.Sc Chemistry (Hons) Organic Chemistry Part-1 - Question Paper
(4302)
7(W)Q-2u;u
B.Sc. (HONS.) (r ART-1; LXAMINA ! ION (CHEMISTRY)
ORGANIC CHEMISTRY (CH-112)
umuin Marks : 26 Duration : Two Hours
TE: (i) Answer ALL the questions.
(ii) Marks are indicated against each question.
Answer any THREE of the following : (2x3 )
a) Define and illustrate with suitable example the concept of hyper-conjugation.
T>) Why up hybridized carbon is more electronegative than sp3 hybridized carbon, explain, c) Describe the various types of organic reactions with suitable examples, d ) Compare the relative acidity of the following carboxylic acids :
, COOH .COOH
V.
(e) Discuss the relative stability of a 1 , 2 and 3 carbocation.
(a) Describe briefly the oxymercuration demercuration reaction of alkene. (2Vi)
(b) Explain the MarkownikofiPs rule and the peroxide effect. (2'/i)
(c) Describe the Hoffmann elimination reaction for preparation of alkenes. (02)
OR
Write down the product/s in the following equations : I each=7
(a) CH3CH2CH3 + Br2 * * hy > ?
CH3
(b) C - CH2 + H20 ----> ?
CH3
CH- H
\ /
(c) C = C
/ 1 Z.H:0
CH./ CH3
fd) c;H: = CH CH = CH2 + Br, > ?
;c) R CsC - H - IbO
H, SO,
~T
 |
|
f 43H2 > |
.1 i i -1 I H IN
a t Krcdici thu product.o> and give mecnarusm of any ONE of the following reactions :
(02)
|
(i) |  |
v,--'
:Jw imp
ib) State and explain {luckd's rule.
(02)
(02)
(03)
(02)
(i:) Why cyclopropane and cyclobutane are less stable than cyclopentane, explain.
cu What do von understand by configuration ? Explain the term R & S with suitable
e\ample:
<!( Idetitil;. I an.) / isomers in ihc following compounds :
()M Br
c2h5
OH
I ! !
H
F
v.
CH3'
r~
C = C
(it)
\
(c) Differentiate between diastereomers and enantiomers with suitable examples.
(02)
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Attachment: |
| Earning: Approval pending. |
