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Worksheetsoxygen and its propertis
Total questions: 17
Worksheet time: 7mins
Name
Class
Date
1.
Which substance supports burning?
a)
Hydrogen
b)
Nitrogen
c)
Oxygen
d)
Carbon Dioxide
2.
What is the percentage existence of oxygen gas in air?
a)
%78
b)
%32
c)
%18
d)
%21
3.
Which of the following method is one of the laboratory preparation of oxygen gas?
a)
Decomposition of KClO3
b)
Decomposition of H2S
c)
Combination of H and O
d)
Distillation of H2O
4.
Which of the following oxide is different than the others?
a)
SO3
b)
CO2
c)
CaO
d)
P2O5
5.
Which of the following oxide is the one of the neutral oxide?
a)
Al2O3
b)
NO2
c)
Na2O
d)
H2O
6.
Which oxide is used to reduce acidity of soil in agriculture?
a)
Na2O
b)
CO2
c)
SO2
d)
CaO
7.
Which of following air pollutant gases causing "greenhouse" effect?
a)
SO3
b)
NO2
c)
CO
d)
CO2
8.
a metal + oxygen ----- >
a)
metal salt + hydrogen
b)
metal salt + oxygen
c)
metal oxide + oxygen
d)
metal oxide
9.
copper + oxygen --- >
a)
copper oxide + oxygen
b)
copper oxide + hydrogen
c)
oxygen
d)
copper oxide
10.
Is oxygen metal or nonmetal?
a)
metal
b)
nonmetal
11.
Oxygen is ________% of the air.
a)
5
b)
10
c)
21
d)
30
12.
What is the other main gas in air?
a)
Carbon Dioxide
b)
Nitrogen
c)
Water
d)
Argon
13.
Oxidation is
a)
Gain of oxygen
b)
Loss of oxygen
c)
Gain of electrons
d)
Loss of electrons
14.
Reduction is the _____________
a)
Gain of oxygen
b)
Loss of oxygen
c)
Gain of electrons
d)
Loss of electrons
15.
O =
a)
oxigen
b)
oxygen
c)
oxegin
d)
oxygin
16.
How is oxygen produced naturally?
a)
During photosynthesis
b)
During an earthquake
c)
In a mountain
d)
During a flood
17.
What percentage of your body is made up of oxygen?
a)
65%
b)
45%
c)
35%
d)
55%
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