CS/B.Sc.(H)/BT/MOL-BIO/GENETICS/MICRO BIO/SEM-4/CH-401/2012
2012
CHEMISTRY
Time Allotted : 3 Hours Full Marks : 70
The figures in the margin indicate full marks.
Candidates are required to give their answers in their own words
as far as practicable.
GROUP – A
( Multiple Choice Type Questions )
1. Choose the correct answers for any ten of the following :
10 × 1 = 10
i) A carboxylic acid can be converted to its higher
homologue via acid chloride by
a) Arndt-Eistert Synthesis
b) Bischler-Napieralski Synthesis
c) Claisen-Schmidt Condensation
d) Dieckmann Reaction.
ii) The relationship between the rate of first order reaction
and the concentration of the reactant is
a) directly proportional b) indirectly proportional
c) exponential d) Nil.
iii) The number of essential amino acid is
a) 7 b) 8
c) 9 d) 5.
iv) Which of the following reactions is chain shortening
reaction of carbohydrates ?
a) Ruff degradation
b) Killiani-Fischer synthesis
c) Osazone formation reaction
d) Karl-Fischer reaction.
v) The orgametallic compound involved in Reformatsky
reaction contains the metal
a) Mg b) Li
c) Zn d) Cd.
vi) α-D- Glucose is different from β-D-Glucose
a) in the configuration at C-1
b) in the configuration at C-2