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Online Tests
Chemistry Fsc Part 1 Chapter 6 Online Test MCQs With Answers
Question # 1
How many sigma and pi bonds are present in C2H2.
Choose an answer
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 # 2
In which molecule all atoms are coplanar.
Choose an answer
CH4
BF3
NH3
PH3
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Question # 3
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 # 4
Which has zero potential energy.
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When H atom is independent
When two H atoms combine to form H2 molecule
When two H atoms super impose to each other
When two H atoms have weak attraction between them
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Question # 5
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 # 6
Suppose a new element 'J' has discovered and has seven electron in the valence shell. Which statement about this element would be correct.
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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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Question # 7
______ Molecule has zero dipole moment.
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CO
H2S
SO2
CH4
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Question # 8
Which of the following species has unpaired electrons in antibonding molecular orbitals.
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O2
+2
N2
-2
B2
F2
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Question # 9
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 # 10
The H - H Bond energy in KJ mole -1 is.
Choose an answer
346
436
463
336
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Question # 11
Which of the following has coordinate covalent bond.
Choose an answer
NH4
NaCl
HCl
AlCl3
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Question # 12
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 # 13
Which one of the following molecules is paramagnetic.
Choose an answer
H2
He
N2
O2
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Question # 14
The molecule having zero dipole moment is.
Choose an answer
NH3
CHCl3
H2O
BF3
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Question # 15
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 # 16
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 # 17
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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