Download NSEC-Solved-Paper-2007.pdf PDF

TitleNSEC-Solved-Paper-2007.pdf
File Size149.7 KB
Total Pages10
Document Text Contents
Page 1

INDIAN ASSOCIATION OF CHEMISTRY TEACHERS
NATIONAL STANDARD EXAMINATION IN CHEMISTRY 2007-2008



This is question paper contains 100 multiple-choice
question. Each correct answer carries 3 marks and
1 mark will be deduced for each wrong answer. No
weightage II be given to unattempted question.
Q.1 Identify the chiral species among the

following

(A)
Br

H Br

H
(B)

Br Br


(C)

Br

Br
(D)


C=C=C

H

H

Br

Br







Q.2 The achiral species among the following is :
(A) a car (B) a screw driver
(C) a screw (D) a hand


Q.3 Which one of the following compounds has
(Z) configuration about the C-C double bond ?

(A)
O

O

O
O H3C

H3C

CH3



(B)
H3C

CH3

CO2Me

CONH2


(C)
Br CH2CH2OH

CH(CH3)2 Cl


(D)
Br CH2OH

CHO Cl



Q.4 From the two pairs a and b of resonance

structure given below, designate the ones that
would contribute most to the resonance
hybrid


CH2
��

(a)

I

CH2

��

II

(b) CH2 NH(CH3)2
��

CH2 N(CH3)2

III IV

..

(A) I & III (B) I & IV
(C) II & III (D) II & IV


Q.5 The order of the rate of formation of
carbocations from the following iodo
compounds is :





H I
I

H I
II

H I
III

(A) I > II > III (B) I > III > II
(C) III > II > I (D) II > III > I

Q.6 The Keq. values in HCN addition to following

aldehydes are in the order :

MeO

O

H

I

O

H

II
Me2N

O

H

III



(A) I > II > III (B) II > III > I
(C) III > I > II (D) II > I > III

Q.7 The major product formed upon addition of

1 mole of HBr in the following reactions is

Similer Documents