Be and Al exhibit diagonal relationship which of the following statements about them is /are not true ? (i) Both react with HCl to liberate `H_(2)`. (ii) They are made passive by `HNO_(3)`. (iii) Their carbides give acetylene on treatment with water . (iv) Their oxides are amphoteric .A. (iii) and (iv)B. (i) and (iii)C. (i) onlyD. (ii) and (iii)

Be and Al exhibit diagonal relationship which of the following stateme

1.	Be and Al exhibit diagonal relationship which of the following statements about them is /are not true ? (i) Both react with HCl to liberate `H_(2)`. (ii) They are made passive by `HNO_(3)`. (iii) Their carbides give acetylene on treatment with water . (iv) Their oxides are amphoteric .A. (iii) and (iv)B. (i) and (iii)C. (i) onlyD. (ii) and (iii)
Answer» Correct Answer - D Their carbides on treatment with `H_(2)O` gives methane . Aluminium carbide also reacts with `H_(2)` to give methane . `Al_(4) C_(3) + 12 H_(2)O to 4 Al(OH)_(3) + 3 CH_(4)`

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