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Subjects
Science State Board
Class 8
Matter around us
Textbook questions
10.
Answer very briefly II
Exercise condition:
3.3
m.
1
.
Write the symbols for the following elements:
a
.
Oxygen:
\(On\)
\(Ox\)
\(O\)
b
.
Gold:
\(Ag\)
\(Au\)
\(G\)
c
.
Calcium:
\(Ca\)
\(C\)
\(Cu\)
d
.
Cadmium:
\(Cm\)
\(Ca\)
\(Cd\)
e
.
Iron:
\(Fe\)
\(I\)
\(Ir\)
2
.
Which non-metal is essential for our life and all living beings inhale it during breathing?
Hydrogen
Carbon dioxide
Oxygen
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