Kossel - Lewis Approach to Chemical Bond Formation NEET Questions

Physical Chemistry - Chemical Bonding and Molecular Structure

Kossel - Lewis Approach to Chemical Bond Formation MCQ Questions


7.
The bond formed by electrostatic attraction between positive and negative ions is termed as:
A.
Covalent bond
B.
Electrovalent bond
C.
Coordinate bond
D.
Hydrogen bond
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ANSWER :
B. Electrovalent bond
8.
The electrovalence of calcium in CaF₂ is:
A.
+1
B.
-2
C.
+2
D.
0
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ANSWER :
C. +2
9.
According to the octet rule, atoms combine by:
A.
Only sharing of electrons
B.
Neither transfer nor sharing
C.
Only transfer of electrons
D.
Either transfer or sharing of electrons
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ANSWER :
D. Either transfer or sharing of electrons
10.
Who refined the Lewis postulations by introducing the term 'covalent bond' in 1919?
A.
Sidgwick
B.
Mulliken
C.
Langmuir
D.
Pauling
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ANSWER :
C. Langmuir
11.
When two atoms share two pairs of electrons, the bond formed is called:
A.
Triple bond
B.
Single bond
C.
Double bond
D.
Coordinate bond
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ANSWER :
C. Double bond
12.
The number of shared electron pairs in N₂ molecule is:
A.
1
B.
3
C.
4
D.
2
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ANSWER :
B. 3