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Chemistry CBSE Live product
Class 10
Metals and non-metals
Extraction of metals
4.
Exemplar - Thermit reaction
Question:
3
m.
Answer the following question:
Compound X and aluminium are used to join railway tracks.
i. Identify the compound X.
ii. Name the reaction.
iii. Write down its equation.
i
.
The compound 'X' is
Iron (III) oxide (\(Fe_2O_3\))
Iron oxide (\(FeO\))
Aluminium oxide (\(Al_2O_3\)
Iron (II) oxide (\(Fe_2O_3\))
ii.
The name of the reaction is the
thermal decomposition reaction
thermit reaction
photolytic reaction
combination reaction
.
iii
.
The equation is
\(Fe_2O_3(s)+2Al(s)→Fe_2(l)+Al_2O_4(s)\)
\(FeO(s)+2Al(s)→2Fe(l)+Al_2O_3(s)+Heat\)
\(Fe_2O_3(s)+2Al(s)→2Fe(l)+Al_2O_3(s)+Heat\)
\(Fe_2O_4(s)+2Al(s)→2Fe(l)+Al_2O_3(s)+Heat\)
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