Be and Al exhibit diagonal relationship. Which of the following statem – InterviewSolution

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
Answer» (III) and (IV) (I) and (III) (I) only (III) only Solution :The CARBIDES of both Be and AL liberate methane with water. `Be_(2)C+ 2H_(2)O to 2BeO +CH_(4)` `Al_(4)C_(3) +6H_(2)O to 2Al_(2) O_(3) +3 CH_(4)`

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