MU Engineering Chemistry - 1 - December 2015 Exam Question Paper

MU Chemical Engineering (Semester 3)
Engineering Chemistry - 1
December 2015

Total marks: --
Total time: --

INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

Answer the four of the following:-

1(a) Explain the structure of SF₄ molecule on the basis of VSEPR Theory.

5 M

1(b) Write IUPAC names of the following co-ordination compounds-
(i) [Zn(NCS)₄)^2-
(ii) Na[Mn(CO)₅]

5 M

1(c) Explain preparation, properties and bonding involved in Fe(CO)₅.

5 M

1(d) Explain Thermodynamically and Kinetically controlled reactions. Hence, explain methylation of toluene by Friedal-Craft reaction.

5 M

1(e) Compare the stability of tertiary, secondary, primary and methyl carbocation. Justify your answer using inductive effect and hypercojugation.

5 M

1(f) What is an elimination reaction? Explain E1 reaction with mechanism.

5 M

2(a) Explain electrophilic substitution in case of anilinium ion.

5 M

2(b) Write the chemical formula of the following co-ordination compounds-
(i) Diamine silver (I) chloride
(ii) Tetracyanonickelate (II) ion

5 M

2(c) Complete the reaction. State the name of the reaction and explain the mechanism of the same.

5 M

2(d) Explain biochemistry of enzyme containing copper.

5 M

3(a) Draw molecular orbital diagram for CO molecute and comment on its bond order and magnetic properties.

5 M

3(b) What is EAN? Calculate EAN for [Cu(CN)₄)^3-

5 M

3(c) Explain structure of carbon free radicals.

5 M

3(d) Explain electrophilic substitution in case of chlorobenzene.

5 M

4(a) Discuss the formation of carbocations.

5 M

4(b) Compare MOT and VBT.

5 M

4(c) What is CFSE? Calculate CFSE for d⁵ and d⁹ configuration for high spin and low spin complexes.

5 M

4(d) What is nucleophilic substitution reaction? Explain the mechanism of SN² reaction with suitable example.

5 M

5(a) Discuss the mechanism of Pinacol-Pinacolone rearrangement with respect to symmetrical pinacol.

5 M

5(b) Explain oxygen actom transfer biomolecular reaction containing iron.

5 M

5(c) Compare Bonding and Antibonding molecular orbitals.

5 M

5(d) Define the terms:- (i) Complex ion
(ii) Co-ordination number
(iii) Co-ordination sphere
(iv) Ligand
(v) Chelating ligand

5 M

6(a) On the basis of MOT, explain energy level diagram of O₂ molecular. Calculate bond order and comment on its magnetic properties.

5 M

6(b) Give mechanism and applications of Michael reaction.

5 M

6(c) What is geometrical isomerism? Explain geometrical isomerism in Pt(II) complexes with co-ordination number 6.

5 M

6(d) Explain Friedal-Craft alkylation reaction.

5 M

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