Statement (A) Mg can reduce Al_2 O_3 above 1350^° C . Statement (B) Al can reduce MgO below 1350^° C . The correct answer is

Q28 / 160 · TS EAMCET 2019 (04 May Shift 1) · Chemistry

Statement (A) $\mathrm{Mg}$ can reduce $\mathrm{Al}_2 \mathrm{O}_3$ above $1350^{\circ} \mathrm{C}$. Statement (B) Al can reduce $\mathrm{MgO}$ below $1350^{\circ} \mathrm{C}$. The correct answer is

Correct answer
A
Both (A) and (B) are wrong.
B
(A) is correct, but (B) is wrong.
C
(A) is wrong, but (B) is correct.
D
Both (A) and (B) are correct.

Solution

$\mathrm{Mg}$ can reduce $\mathrm{AI}_2 \mathrm{O}_3$ below $1350^{\circ} \mathrm{C}$ accordingly to Ellingham diagram. On the other hand, AI can reduce $\mathrm{MgO}$ above $1350^{\circ} \mathrm{C}$. Thus, both statements $(\mathrm{A})$ and $(\mathrm{B})$ are incorrect.

Hence, the correct answer is option: 'A'.

Statement (A) $\mathrm{Mg}$ can reduce $\mathrm{Al}_2 \mathrm{O}_3$ above $1350^{\circ} \mathrm{C}$. Statement (B) Al can reduce $\mathrm{MgO}$ below $1350^{\circ} \mathrm{C}$. The correct answer is

Solution

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