Devi Ahilya University 2010 B.Sc Chemistry Organic - Question Paper
organic chemistry
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Roll No. |
B. Sc. IV SEMESTER [MAIN] EXAMINATION, JUNE - 2010
10411
Paper - III [Organic Chemistry]
Time : 3:00 Hr s.] [Max. Marks : 23
Note : AH THREE Sections are compulsory. Student should not write any thing on question paper.
3JpMl4 | ftWsff TnFP-TqRT feT |
[Section - A]
This Section contains Objective type questions. Each question carries Vi Marks.
3 11 w&p jfft Vi 11
Q. 01 Upon heating phenol with phthalic anhydride and conc. H2SO4, following compound is formed -
a) Naphthalene b) Bakelite
c) Phenolphthalein d) Benzoic acid
fFTTef rRTT conc. H2S04 cf> TRT M W fT eRrfT t -
a) Tcffr b)
c) d)
Q. 02 CH(OH) COOH is the structural formula of -
CH2 COOH a) Malic acid
Malonic acid None of these
b)
d)
c) Maleic acid
CH(OH) COOH mwn t -
CH2 COOH a) 3T
c) 3Fef
Q. 03 Which of the following is most basic -
fFT 3 cffhT iftte STTfm t -
a) NH3 b) CH3NH2 c) CH3\XTTT d) CH3 ch3
NH
CHi
Q. 04 Which compound does not exhibit aromaticity -
a) Pyrrole b) Piperidine
c) Pyridine d) Quinoline
cffft TT iftte yfcT cIT t -
a) MRRTef b) 1WW
c) d)
P.T.O.
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Isoprene Vinyl Chloride | ||||||||||||
|
o2n OH | |||||||||||||
N02
Q. 06
is known as -
N02
b)
d)
a) TNT c) TNB
Picric acid None of these
OH
02N
\
N02
v/
no2
a) A xpT.. c)
b)
d)
[Section - B]
This section contains Short Answer type questions. Each question carries IV2 Marks.
xis)us If 1 VA 1
Q. 1 Why are phenols more acedic than alcohol ? ftFffcT XTWcf 3Tfej 3T*efrT cfzff t ?
OR
What is Ziesels method ? Write it's chemical equation ? vjfTvcT fr W t ? ?WI Wfto fcTt ?
Q. 2 Why is Chloroacetic acid more acedic than acetic acid ?
CR# 3Fef 3FcT SFcffa ff t ?
OR
What is Hell-Volhard - Zelinsky reaction give of chemical equation ?
#or - cfrri - feFR<f?r 3TrtoT w t, frfr ?
Q. 3 Explain the reduction of nitro benzene is alkaline medium ? cf>r srrfrT smcfTTf ?
OR
Cont...
What is phase transfer catalyst ? Give example. yTcRsrr TFffcR tfrtkcb cpqj f 41Rj1 I
Q. 4 Which Heterocyclic Compound is prepared by Fischer Indole synthesis, Write it's chemical equation only ?
f&m cFTRTT TTcTT tl
TRTRte fcTfT ?
OR
Which hetero cyclic compound is prepared by Straup synthesis ? Write its chemical equation only ?
WT NT faWcTsffrT FfRTT uTTcTT tl %?> TTWTfe
PflcRTJT fMM ?
Q. 5 What are Polymers ? Explain with examples ?
W t ?
OR
Write the difference between addition and condensation polymer.
3jY*llcH*F 3fk 3 3RF? I
[Section - C]
This section contains Essay Type Questions. Each question carries 2/4 marks.
W*S % cflfcftfftffa TTFT t1 3TT 2Vi 3Rpf t1
Q. 1 Write the mechanism of Claisen rearrangement ? cTcIoh feWfc tor fr fcito ?
OR
Write the mechanism of Reimer Tiemann reaction.
fcrfr fMM ?
Q. 2 Write the effect of heat (at 150 c) on the following acids -
i) Tartaric acid ii) Citric acid iii) Malonic acid
iv) Malic acid v) Succinic acid
araf vJTT TO (150 C R) cfcTTr -i) eueRg> ii) iii) 3TT
iv) 3FcT v) 3FcT
OR
Explain the reactivity order of different acid derivatives towards the Nucleophilic substitution.
yfrRSTFH #5 3Fef ogcMff eft ffMlilflddi I
Q. 3 Describe Hinsberg's method of separation of amines ?
3TeFT cjr cf?T flRrf cff |
P.T.O.
How will you prepare following from Benzene Diazonium Chloride -i) Benzene ii) Phenol iii) Chloro benzene
iv) Phenyl hydrazine v) P- hydroxy azobenzene
cj-dNi 3 fFT cr -
i) vjIh ii) fFffeT iii) cf-oikl
iv) v) P- IIckTI
Q. 4 Describe aromatic character of Pyrrole, Furon and Th$ophene ?
WKtt, cfSTT STPTt cy ?
Compare the basic properties of Pyrole, Pyridine and Piperidine ?
TTRRlcT, WifMhT eft ePlT cftfuf I
Q. 5 Write short notes on Nylon 66 or Natural Rubber.
%TcTH 66 TT m fufr fcffet |
Explain Free Dadical Polymerization ?
Ci< 51 eft ?
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