CHEMICAL BONDING JEE
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Medium
SUDHA RATHEESH
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The bond dissociation energy of B–F in BF3 is 646 kJ mol-1 whereas that of C–F in CF4 is 515 kJ mol–1. The correct reason for higher B–F bond dissociation energy as compared to that of C–F is
Significant pπ – pπ interaction between B and F in BF3 whereas there is no possibility of such interaction between C and F in CF4.
Lower degree of pπ – pπ interaction between B and F in BF3 than that
between C and F in CF4
Smaller size of B-atom as compared to that of C-atom
Stronger bond between B and F in BF3 as compared to that between C and F in CF4.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Among the following species which two have a trigonal bipyramidal shape?
(1) NI3 (2) I3– (3) SO32- (4) NO3–
II and III
III and IV
I and IV
I and III
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Using MO theory, predict which of the following species has the shortest bond length?
O2–
O22-
O22+
O2+
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Among the following, the species having the smallest bond is :
NO
NO+
O2
NO–
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The hybridisation of orbitals of N atom in NO3–, NO2+, NH4+ are respectively:
sp2, sp3, sp
sp, sp3, sp2
sp, sp2, sp3
sp2, sp, sp3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Based on lattice energy and other considerations, which one of the following alkali metal chlorides is expected to have the highest melting point?
RbCl
LiCl
KCl
NaCl
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The structure of IF7 is :
octahedral
pentagonal bipyramid
square pyramid
trigonal bipyramid
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