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Chemistry 9 Chapter 4 - Structure of Molecules -5
1.
Oxygen has the atomic number 16. How many electrons are needed by
it to complete its octet?
a) 3
b) 16
c) 2
d) 4
2.
How many covalent bonds are contained in N
2
molecule?
a) Four
b) Three
c) Two
d) Five
3.
Hydrogen atom needs one electron to complete its?
a) Duplet
b) None of these
c) Octet
d) Triplet
4.
Which one of the following contains covalent bond?
a) Hydrochloric acid
b) Ammonia
c) Carbon dioxide
d) All of these
5.
The covalent bond in which both the identical atoms exert same
force on the shared pair of electrons is known as?
a) Polar covalent bond
b) Non polar covalent bond
c) Ionic bond
d) Coordinate covalent bond
6.
When two different atoms exert different forces on the shared
electron pair, it is known as?
a) Non polar covalent bond
b) Hydrogen bond
c) Polar covalent bond
d) Ionic bond
7.
Two different atoms exert different forces on the shared electron
pair due to having?
a) Same electro negativities
b) Different ionization energies
c) Different electro negativities
d) Same ionization energies
8.
The forces of attraction between two molecules is known as?
a) Intermolecular forces
b) Extra-molecular forces
c) None of these
d) Intra-molecular forces
9.
The shared electron pair between two atoms is attracted towards?
a) The most electropositive atom
b) Both of these
c) The most electronegative atom
d) None of these
10.
How many electrons are needed by Carbon to complete its octet?
a) 3
b) 5
c) 2
d) 4
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