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Chemistry Fsc Part 1 Chapter 6 Online Test MCQs With Answers
Question # 1
The number of bonds in nitrogen molecule is
Choose an answer
One o and one
π
One o and two
π
Three sigma only
Two o and two
π
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Question # 2
Carbon atom in methane in hybridized.
Choose an answer
sp3
Sp2
Sp
dsp3
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Question # 3
In a group of periodic table, ionization energy.
Choose an answer
Decreases
Increases
Remains same
First increases than increases
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Question # 4
Which of the following species has unpaired electrons in anti bonding molecular orbitals
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O2
N2
B2
F2
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Question # 5
Which one of the following has the greater ionic characters in it.
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HF
HCl
H2O
H2
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Question # 6
Which of the following is true for ionic compounds
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They are non-electrolytes in the molten state
They have bonds which are directional
They conduct electricity in solid state
They are generally more soluble in polar solvents than in non-polar solvents
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Question # 7
The percentage of s characters in sp3 hybrid orbital is.
Choose an answer
25%
33.3%
50%
75%
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Question # 8
Which of the following species has unpaired electrons in anti-bonding molecular orbitals
Choose an answer
O
2
+2
N
2
-2
B
2
F
2
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Question # 9
In which one of the following pairs do the molecule have similar shape.
Choose an answer
BF3 and AlCl3
CO2 and H2O
CH4 and PH3
NH3 and BCl3
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Question # 10
SP
3-
hybridization in important in describing the bonding in
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Question # 11
The paramagnetic behaviour of oxygen is well explaned on the basis of.
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M.O Theory
N.B Theory
VSEPR Theory
CF theory
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Question # 12
Along period of periodic table shielding effects.
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Increases
Decreases
Remain constant
First increases than decreases
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Question # 13
Which statement is true about Na and Na+
Choose an answer
size of Na is greater than Na+
Size of Na is smaller than Na+
Both have equal size
Both have same properties
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Question # 14
The bond order of N2 molecule is.
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1
2
3
4
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Question # 15
Ionic bond is formed by combination of groups
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IA and VIII
II A and VII A
IV A and VA
VIA and VII A
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Question # 16
Which element has highest ionization potential.
Choose an answer
Li
B
Be
C
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Question # 17
Ionic compound do nto show the phenomenon of Isomerism because bond are.
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Directional and rigid
Non directional and rigid
Non directional and non rigid
All above
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Question # 18
Dipole moment is defined as.
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Charge x distance
Charge x Debye
Charge x displacement
Charge x bond energy
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Question # 19
Forces of attraction between He atoms are.
Choose an answer
Hydrogen bonding
London forces
Debye forces
Ion dipole forces
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Question # 20
In BeCl2, the covalent bond is formed due to overlap of
Choose an answer
sp -s
sp -p
sp2 -p
sp3 -p
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Question # 21
Suppose a new element 'J' has discovered and has seven electron in the valence shell. Which statement about this element would be correct.
Choose an answer
It is monatomic
It form covalent bond with hydrogen
It forms stable positive ion
It forms covalent bond with group IA element
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