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Subjects
Science CBSE
Class 10
Metals and non-metals
Textbook questions
43.
NCERT Exemplar: Short answer questions IV
Exercise condition:
3
m.
Compound X and aluminium are used to join railway tracks.
a
.
Identify the compound X.
Iron oxide (\(Fe_2O_4\))
Iron (III) oxide (\(Fe_2O_3\))
Iron (II) oxide (\(Fe_2O_3\))
b
.
Name the reaction.
Photochemical reaction
Ritter reaction
Thermal decomposition reaction
Thermit reaction
c
.
Write down its reaction.
\(Fe_2O_4(s)+2Al(s)→2Fe(l)+Al_2O_3(s)+Heat\)
\(Fe_2O_3(s)+2Al(s)→Fe_2(l)+Al_2O_4(s)\)
\(Fe_2O_3(s)+2Al(s)→2Fe(l)+Al_2O_3(s)+Heat\)
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