COMEDK · Chemistry · 3. Classification of Elements and Periodicity in Properties
Which of the following statements is/are true about the diagonal relationship of Be and Al ?
(i) Both react with NaOH to liberate hydrogen.
(ii) Their oxides are basic.
(iii) They are made passive by nitric acid.
(iv) Their carbides give acetylene on treatment with water.
- A Only (i)
- B (i) and (iii)
- C (ii) and (iv)
- D (i), (ii), (iii)
Answer & Solution
Correct Answer
(B) (i) and (iii)
Step-by-step Solution
Detailed explanation
Statement given in (i) and (iii) are correct, while in (ii) and (iv) are incorrect. BeO and \(\mathrm{Al}_2 \mathrm{O}_3\) are amphoteric. These react with acid as well as alkalines to given corresponding salts.…
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