(C) $1$. In an Ellingham diagram,the metal whose line lies lower can reduce the oxide of the metal whose line lies higher. Thus,if $M$ is below $M'O$,

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(C) $1$. In an Ellingham diagram,the metal whose line lies lower can reduce the oxide of the metal whose line lies higher. Thus,if $M$ is below $M'O$,$M$ can reduce $M'O$ to $M'$. This statement is correct.$2$. Oxides of alkaline earth metals (like $CaO$,$MgO$) are basic in nature. They react with acidic oxides (like $CO_2$,$SO_2$) present in the atmosphere to form carbonates or sulfites (salts). This statement is also correct.$3$. Therefore,both statements are correct.

Class 12 Chemistry General Principles and Processes of Isolation of Elements Mix Examples of General Principles and processes of Isolation of Elements

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Select the correct statement.

A
In an Ellingham diagram,if a metal $M$ is present below the line of another metal oxide $M'O$,then metal $M$ is a good reducing agent for $M'O$.
B
Due to the basic nature of the oxides of alkaline earth elements,they combine with atmospheric acidic oxides to form salts.
C
Both are correct.
D
None is correct.