Chemistry
Assertion (A): Hall Heroult’s process is used to get pure aluminium from its oxide.
Reason (R): Aluminium generally is not found in aluminium oxide form.
- Both A and R are correct.
- A is correct, but R is not a true explanation of A.
- A is correct, and R is a true explanation of B.
- Both A and R are incorrect.
Metallurgy
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Answer
Both A and R are correct.
Reason — The Hall-Heroult process is used to extract pure aluminium metal by the electrolytic reduction of aluminium oxide (Al2O3), which is obtained from bauxite by bayer's process. Hence, the assertion (A) is true.
Aluminium is generally not found in aluminium oxide form, aluminum is highly reactive and is found in its main ore bauxite (Al2O3.2H2O). Hence, the reason (R) is correct.
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