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43. NCERT Exemplar: Short answer questions IV

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.

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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