TYBSc Chemistry Sem 6 Organic Chemistry Question Paper PDF 2026 - Mumbai University | munotes

(2) Figures to the right indicate full marks
(3) Use of log-tables/non-programmable calculators is permitted
of the following
(A) An organic compound has molecular formula Determine the index
of its hydrogen deficiency and deduce its structural from the
following spectral data. Also write name of the
(B) An organic compound has molecular formula CHD. Determine the index
of its hydrogen deficiency and deduce its formula from
following spectral data. Also write name of thé compound
(C) (a) Three samples are expected of 2-butanol, butanone and
ethoxyethane. Explain how choose the correct ones using their
I.R. spectra. 3
(b) How will you distinguish between the following pairs of compounds 2
on the basis of the Amax\alues in their u.v.spectra ?
(ii) 1, 3- Pentattiene and 1, 4-pentadiene
(D) (a) Three samples having molecular formula are expected to be 3
and 3-chloropentane. How will you choose the correct ones
(b) Why are.ethylenic protons more deshielded than expected ? 2
(E) . What are and molecular ion peak ? Explain their 5
of organic compounds
(F) (a) Give the mass-spectrometric fragmentation pattern of 2-methylbutane. 3
at m/e 59 and m/e 60 respectively. How will you distinguish between
them in terms of the number of nitrogen atoms present, onthebasisof a
the nitrogen rule ?
on the basis,
d degradation in the <3 4 q
(C) Explain the use of Hofmann exhaustive methylation 0
structural determination of alkaloids with suitable examP ricotine
(D) (a) How will you account for the presence of following in nl q
(b) How is methly heptenone converted to citral
(E) Complete the following reactions : E
ii)
(ii)
(iii) (4
(F) (a) Explain the use, of selenium dioxide in synthetic organic chemistry 3
(b) What is WiiXinson's catalyst ? Mention its use in synthesis. 2
Answer any three 6 the following :
(A) What are acids ?.Explain their configuration with an example. 5
preparation of a-amino acids by
(B) Explain Merrifield’s solid phase synthesis to prepare dipeptides. Write its 5
the terms nucleotides and nucleosides. Draw one structure ofeach. 5
Explain the double helix structure of DNA
(D) What are conjugated proteins? Name any two conjugated protiens ? Name 5
any two conjugated proteins. Explain (i) Pleated sheet structure of proteins
(ii) Colloidal nature of proteins
of jn presence
(iii). PVA @
have high tensile str
(B) State whether the
(p) When free are true or false
ical polymerisation of carried out
a peroxide, trans polyisopren? is
are esters of carbamic acid
(C) Fill in the alate is used as stabilizer for polymers
(a) Rosenm option
(b) (iii) Palladium
is a fat soluble
(d) In nicotine, the pyridine ring is attached to 4 _ ring
(C) Fill in the iwth appropriate option :- | 4
acid is used for of alkenes
(iii) Chlorination
A molecule of thyroxine contains iodine atoms
(iii) four
(iii) Geraniol is obtained as product of of citral
(p) oxidation (q)
(iv) Atropine is 4 alkaloid
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