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Online Tests
Chemistry 9th Class English Medium Unit 1 Online Test MCQs With Answers
Question # 1
The No. of atoms in 1 mole of carbiton is
Choose an answer
6.02 x 1021
6.02 x 1022
6.02 x 1023
6.02 x 1024
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Question # 2
Free radical is a
Choose an answer
Extremely stable
Extremely reactive
Extremely inert
All of these
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Question # 3
_________ is an example of substance.
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Carbon
Hydrogrn
Oxygen
Water
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Question # 4
How many numbers of moles are equivalent to 8 grams of CO
2
?
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0.15
0.18
0.21
0.24
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Question # 5
Salt & water is a _________ mixture.
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Homogeneous
Heterogeneous
It is not mixture
Nil
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Question # 6
The atomic number is represented by ____________
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A
Y
X
Z
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Question # 7
_________ elements naturally occurring.
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92
118
93
117
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Question # 8
An ion is a charged particles:
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True
False
In some conditions
Never
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Question # 9
The empirical formula of glucose is
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CHO
CH2O
C2HO
CHO2
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Question # 10
The period of Alchemists extends from _________ AD.
Choose an answer
800 to 1800
600 to 1600
900 to 1900
700 to 1700
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Question # 11
In volvox asexual cell produced:
Choose an answer
Daughter colonies
Sperm
Egg
All
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Question # 12
The molar mass of H
2
SO
4
is:
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98 g
98 amu
9.8 g
9.8 amu
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Question # 13
Number of protons+ neutrons is :
Choose an answer
Atomic mass
Mass numbers
Both
Nil
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