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Home
Chemistry Test 67
Chemistry Test 67
Time Left -
Question
1/10
1 / -0
Atomic number of the element is equal to _____.
A
Number of electrons
B
Number of neutron
C
Number of protons
D
Total number of protons and neutrons
Question
2/10
1 / -0
The material used in the manufacture of lead pencil is
A
Graphite
B
Lead
C
Carbon
D
Mica
Question
3/10
1 / -0
Choose the correct statement:
A
Mixtures are homogeneous
B
In a mixture the components are present in a fixed ratio
C
The components of a mixture cannot be separated
D
The properties of a mixture are the same as those of its components
Question
4/10
1 / -0
The aluminium surface is 'anodized'. This mean _____ is deposited.
A
Oxide layer
B
Carbon layer
C
Sulphide layer
D
Aluminium layer
Question
5/10
1 / -0
Nuclear fallout contains
A
Alpha particles
B
-particles
C
Both (1) and (2)
D
Neither (1) nor (2)
Question
6/10
1 / -0
Acid rain is caused by_____.
A
SO
2
and particulates
B
NO
2
and particulates
C
CO
2
and CFC
s
D
SO
2
and NO
2
Question
7/10
1 / -0
Which one out of the following helps in burning?
A
Oxygen
B
Carbon monoxide
C
Nitrogen
D
Carbon dioxide
Question
8/10
1 / -0
The term reactor referred to in waste water treatment is
A
Vessel
B
Settling tank
C
Clarifier
D
Aeration tank
Question
9/10
1 / -0
Cataytic converters are generally made from
A
Hydrogen
B
Carbon
C
Transition metals
D
Alkaline metals
Question
10/10
1 / -0
Choose the incorrect statement pertaining to organic compounds
A
They have low melting and boiling points
B
They do not dissolve in water
C
They are not easily combustible
D
They contain mainly carbon and hydrogen
Submit
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Answered -
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