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Online Tests
Chemistry Fsc Part 1 Chapter 6 Online Test MCQs With Answers
Question # 1
Which of the following has coordinate covalent bond.
Choose an answer
NH4
NaCl
HCl
AlCl3
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Question # 2
If we want to change O
2
to O
2
-1
The electron is to be placed in
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Question # 3
Which one of the following molecules is paramagnetic.
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H2
He
N2
O2
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Question # 4
What is bond order.
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Number of unpaired electrons
Number of paired electrons
Number of electrons present in antibonding molecular orbital
Number of bond formed between two atoms after overlap
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Question # 5
Both CH4 and NH3 are four electron pair system the angles of CH4 and NH3 are 109.5
o
and 107.5
o
respectively. This deviation is due to.
Choose an answer
Hydrogen bonding in ammonia
Lone pair attraction
Lone pair occupy more space and repel to other bond pairs
Lone pair lone pair repulsion
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Question # 6
An ionic compound A
+
B
-
is most likely to be formed when
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The ionization energy of A is high and electron affinity of B is low
The ionization energy of A is low and electron affinity of B is high
Both the ionization energy of A and electron affinity of B are high
Both the ionization energy of A and electron affinity of B are low
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Question # 7
The molecular shape of SO3 is.
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Triangular planar
Tetrahedral
Pyramidal
Linear
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Question # 8
How many sigma and pi bonds are present in C2H2.
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one sigma and two pi
two pi and one sigma
Two pi and three sigma
Three pi and two sigma
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Question # 9
Which of the hydrogen halides has the highest percentage of ionic character
Choose an answer
HF
HBr
HCI
HI
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Question # 10
Which statement is true about Na and Na+
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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 # 11
The shape of H
3
O is
Choose an answer
Tetrahedral
Angular
Trigonal planer
Pyramidaj
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Question # 12
Which of the following is a polar molecule
Choose an answer
CCl4
HCl
BF3
CO2
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Question # 13
The tendency of an tom to attract shared pair of electron towards itself is called its.
Choose an answer
Ionization energy
Electronegativity
Electron affinity
dipole moment
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Question # 14
According to MOT, which molecular orbital has highest energy.
Choose an answer
sigma 1s
pi+ 2S
pi 2py
Pi+ 2px
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Question # 15
BF3 has zero while NH3 has 1.49 D dipole moment because.
Choose an answer
B is less electronegative than N
F is more electronegative than N
BF3 is pyramidal while NH3 is planar
NH3 is pyramidal while BF3 is trigonal planar
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Question # 16
Which of the following molecules has zero dipole moment
Choose an answer
NH
3
CHCI
3
H
2
O
BF
3
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Question # 17
The carbon atom is C2H4 is.
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sp3 hybridized
sG2 hybridized
Sp hybridized
dsG2 bybridized
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Question # 18
Chlorine atom and chloride Cl- ions
Choose an answer
Have same chemical and physical properties
Are allotropes of chlorine
Have same number of electrons
Have same number of proton
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