Q. Be and Al exhibit diagonal relationship. Which of the following statement about them is/are not true? Both react with HCl to liberate $H_{2}$ They are made passive by $HNO_{3}$ Their carbides given acetylene on treatment with water Their oxides are amphoteric
A) (iii) and (iv)
B) (i) and (iii)
C) (i) only
D) (iii) only
Explanation
(d)
$Be_{2}C + 2H_{2}O \rightarrow CH_{4} + 2BeO$
$Al_{4}C_{3} + 6H_{2}O \rightarrow 3CH_{4} + 2Al_{2}O_{3}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.