JEE Main 2022 Chemistry question
Not in JEE Main or NEET syllabus
Given are two statements one is labelled as Assertion A and other is labelled as Reason R. Assertion A : Magnesium can reduce at a temperature below 1350°C, while above 1350°C aluminium can reduce MgO. Reason R : The melting and boiling points of magnesium are lower than those of aluminium. In light of the above statements, choose most appropriate answer from the options given below :
Answer: (2)
Solution
According to the Ellingham diagram, below 1350°C the of formation of MgO is more negative than that of , so Mg can reduce , while above 1350°C the of
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