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Online Tests
Chemistry 9th Class English Medium Online Test MCQs With Answers
Question # 1
Air is an example of:
Choose an answer
Gas in gas
Solid in gas
Liquid in gas
Gas in ;iquid
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Question # 2
________________ cannot be seen by naked eye.
Choose an answer
Matter
Molecules
Solid
Liquids
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Question # 3
Which is an acceptor molecule/ion?
Choose an answer
N
2
O
2
H
+
CH
4
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Question # 4
The mass of one molecule of water is:
Choose an answer
18 amu
18g
18mg
18kg
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Question # 5
The empirical formula of glucose is
Choose an answer
CHO
CH2O
C2HO
CHO2
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Question # 6
Molarity is the number of moles of solute dissolved in:
Choose an answer
1 kg of solution
100 g of slovent
Idm
3
of solvent
I dm
3
of solution
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Question # 7
One atmospheric pressure is equal to how many pascals?
Choose an answer
101325
10325
106075
10523
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Question # 8
NaCl + H2O is ____________ solutions.
Choose an answer
Aqueous
Binary
H2O
Nil
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Question # 9
Which molecule has single covalent bond?
Choose an answer
O
2
N
2
CI
2
CO
2
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Question # 10
Which one is largest?
Choose an answer
Exo
Peta
Atto
Pico
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Question # 11
The unit of Molarity is :
Choose an answer
Molar
Volume
Both
Nil
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Question # 12
The no. of electrons in the valence shell of alkali metals is
Choose an answer
1
2
4
7
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Question # 13
When temperature of water drops to ____________ °C it convert onto ice.
Choose an answer
0
-2
-1
1
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