JEE Mains · Chemistry · STD 12 - 4. d and f- block elements
Choose the correct statements from the following. \(A\). \(\mathrm{Mn}_2 \mathrm{O}_7\) is an oil at room temperature \(B\). \(\mathrm{V}_2 \mathrm{O}_4\) reacts with acid to give \(\mathrm{VO}_2^{2+}\) \(C\). \(\mathrm{CrO}\) is a basic oxide \(D\). \(\mathrm{V}_2 \mathrm{O}_5\) does not react with acid Choose the correct answer from the options given below :
- A \(A\), \(B\) and \(D\) only
- B \(A\) and \(C\) only
- C \(A\), \(B\) and \(C\) only
- D \(B\) and \(C\) only
Answer & Solution
Correct Answer
(B) \(A\) and \(C\) only
Step-by-step Solution
Detailed explanation
\((A)\) \(\mathrm{Mn}_2 \mathrm{O}_7\) is green oil at room temperature. \((B)\) \(\mathrm{V}_2 \mathrm{O}_4\) dissolve in acids to give \(\mathrm{VO}^{2+}\) salts. \((C)\) \(\mathrm{CrO}\) is basic oxide \((D)\) \(\mathrm{V}_2 \mathrm{O}_5\) is amphoteric it reacts with acid as…
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