Download AKTU B-Tech 1st Sem 2015-2016 EAS 102 Engineering Chemistry I Question Paper

Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU)) B-Tech 1st Semester (First Semester) 2015-2016 EAS 102 Engineering Chemistry I Question Paper

Printed Pages : 4 33 8 EAS-102
(Following Paper 1]) and Roll No. to be filled in your
Answer Book)
Roll No.
B.TECH
(SEMJ) THEORY EXAMINATION, 2015-16
Engineering Chemistry-I
T ime: 3 hours] . [Total Marks?! 00
1. . Attempt , all parts. All parts carry equal marks. Write
_ answer of each part in short. (10X2=20)
(a) Give any two examples of optically active compounds
without chiral centre.
(b) What is metallic bonding.
(0) Explain functionality of a polymer.
(d) Explain why p-nitrophenol is more soluble than
o-nitrophenol in water.
(6) Arrange in increasing order of stability
C2H5,C6H5CH2*,(CH3)2CH+
(t) Why is the value of Gross Calori?c Value' (GCV)
greater than Net Calori?c Value (NCV).
(l) EAS-102 / 3400

(g) Calculate the order and molecularity of the following
reactions:
CH3COOC2H5+H20+(excess) ?) CH3COOH+C2H50H
(h) Explain why hardness of water is expressed in terms
of terms of CaCOJ equivalents.
(i) Write any two examples of acid-base titration.
(i) Write down the structure of Zeigler-Natta catalyst.
Section-B
Note: Attempt any five questions from this section. (5X10=50)
2.
On the basis of molecular orbital theory explain why F 2 is
diamagnetic while 02 is paramagnetic.
Write the mechanism of SN?& SNzreaction.
Describe the different conformation of n-butane with
potential energy diagram.
Derive the equation for half life of ?rst order reaction. A
reaction that is of ?rst order with respect to reactant A has
a rate constant 6 min". If we start with [A]=5.0 mol L?1
when would [A] reach the value of 0.05 mol L"?
Write the mechanism of any two of the following:
(2)
., -~m; . ~
Write the mechanism of any two of the following:
(a) Aldol condensation.
(b) Beckman rearrangement.
(c) Cannizaro?s reaction.
What is shielding and deshielding. calculate the number
of signal for following molecules:
(a) CH3COCH3
(b) - CZHSOH
Wh at is hydrogen bonding? Differentiate between intra and ._
intermolecular hydrogen bonding with suitable examples.
Descri be the preparation, properties and application of any
' two of the following polymers.
(a) Nylon-6,6
(b) PIV?VIA
(c) Bakelite.
Section-C
Note: Attempt any two questions from this section. (15X2=30)
10. (a) Differentiate between temporary and permnent
hardness of water.
_ O
(3)

(b)
t (C)
11. (a)
(b)
(C)
12. (a)
(b)
De?ne Chemical shift. What is its signi?cance in the
determination of the structure of molecules.
What are biodegradable polymers? Discuss their
application.
De?ne the terms: Phase, Component and Degree of
freedom.
Calculate the weight and volume of air required for
combusion f0 3 Kg of carbon.
Calculate the density of s: lver which crystallizes in a
face center cubic lattice with unit cell length of 0.4086
nm (Atomic wt of Ag=107 .88)
Explain why a pure metal rod half immersed
vertically in water starts corroding at the bottom. _
Calculate the energy of activation whose rate constant
is tripled by 100 C rise in temperator in the vicinity of
27" C.
De?ne bond order. Calculate the bond order and
predict the magnetic behavior of CO,CO+,CO_.
?X._.