MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic Chemistryp-Block (group 13 and 14)Aluminium and Its Compounds
When alumina is heated with carbon in nitrogen atmo- sphere, the products are:
A.Al + CO
B.Al + CO₂
C.Al + CO + CO₂
D.AlN + CO✓ Correct
Explanation
When alumina 2 3 Al O is heated with carbon in the atmosphere of nitrogen it forms aluminium nitride (AlN) and carbon monoxide (CO). And the chemical reaction is followed as 2 3 2 Al O C 3N 2AlN 3CO + + ® +
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