Download OU (Osmania University) B.Sc (Bachelor of Science) 2016 April 1st Year 2005E Chemistry Previous Question Paper
FACULTY OF SCIENCE W?
B.Sc. I?Year Examination, MarchIApril 2016
Subject : CHEMISTRY
Paper? I
Time : 3 hours Max. Marks : 100
Part? A (4 X 15 = 60 Marks)
(Essay Answer Type)
Notre :Answer all questions, choosing any two bits from each question.
Each bit carries 7 % marks.
1 a) Explain the diagonal relationship between Li and Mg.
a b) Write the synthesis and structure of diborane.
*? 0) Write the preparations and reactions of Hydrazine.
d) Write with suitable examptes, how organometallic c3993 emits are used in the
preparation of the following. " :9}
i) Amines ii) Alcohols iii) Atdehydes 5%? iv) Ketones
2 a) What is mesomeric effect? Explain acig?w%?henol.
b) Define Markownikov?s rule and exe?a?i?gh 4a Tng a suitable example.
(c) Draw ati possible conformers of cy??tghe?gene and explain their stability.
, d) Write the preparation angry?
Benzene. '3?
? :25 es
7 ?g?
3 a) Discuss the criticaii?state of gas. Derive the relationship between critical
constants angglander Waat?s constants.
b) What a??tgystal defects? Explain Schottky and Frenket defects.
0) Wha " ??calsoiutiontemperature? Explain the critical solution temperature
9f Y Water?Phenol ii) Water-Triethylamine
rd) [??fin? physical and chemical adsorption and describe their differences.
echani?m of the following compounds from
4 a) Describe de Brogiie's hypothesis and Heisenberg's uncertainty principle and
mention their significance.
b) Draw the molecular orbital energy diagram of 02 molecule. Explain its bond
? order and magnetic character. .
0) Write a note on enantiomers and diastereomers.
d) Discuss the conformational isomerism of n-butane.
Code No. 2005 I E
_ 2 _
Part ? B (8 X 5 = 40 Marks)
(Short Answer Type)
Note : Answer all questions.
5 /a) What is inorganic benzene? Explain the structure and hybridization in
borazote.
0R
b) Write a brief note on graphitic compounds.
6% Classify oxides based on their chemical behaviour.
0R
b) Write about inter halogen compounds and write the structg
7 a) Ctassify the types of organic reagents with exampies
OR 3
b) What are alkanes? Why do they exhibit inertness. %
8/3) Explain the acidic nature of acetylene a f
f C?? @ %?
/b) What IS aromaticity? State Huckei' gwig?dgxplaIn with an example.
etg?) How are liquid crystals classified aia?ggglaIn'?
OR
to) Write about n- type and p-ty\?e sgmlconductors Give an application for each.
10 a) Write a note on azthI?EQi 6
b) What IS an emungTngQ?ent?? Explain its action with an example.
13/3) Write Schrodinger wave equation and explain various terms in it.
b) Write that; tructure of BrF5 moiecugffm the basis of valence bond theory.
1233/ ?Lomb e the bonding and antibonding molecular orbitals with an example.
OR
b) W a note on common ion effect with suitable example.
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