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Chemistry 9th Class English Medium Online Test MCQs With Answers
Question # 1
CO2 the oxidation number of C =.
Choose an answer
+1
+2
+3
+4
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Question # 2
The no. of electrons in the valence shell of alkali metals is
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1
2
4
7
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Question # 3
_________ elements naturally occurring.
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92
118
93
117
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Question # 4
The number of periods is:
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6
7
8
9
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Question # 5
Transfer of electrons between atoms results in:
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metallic bonding
ionic bonding
covalent bonding
coordinate covalent bonding
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Question # 6
Who discovered the proton?
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Goldstein
J.J Thomson
Neil Bohr
Ruther Ford
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Question # 7
Which one of the following is the most penetrating?
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protons
electrons
neutrons
alpha paticles
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Question # 8
Metals from a ____________ part of earth on which we live.
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Smaller
Larger
Medium
Nil
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Question # 9
All ionic compound are ________________ at room temperature.
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Liquid
Solids
Gas
Plasma
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Question # 10
The vertical columns in the periodic table are called:
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perlods
groups
rows
blocks
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Question # 11
The no. of Ion pair/pairs in ammonia molecule is / are
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1
2
3
4
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Question # 12
________________ is the shortest period.
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6th
8th
2nd
1st
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Question # 13
Which one of the following is the weakest force among the atom?
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ionic force
metallic force
intermolecular force
covalent force
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