D And F Block Elements Question 19
Question 19 - 2024 (31 Jan Shift 2)
Choose the correct statements from the following
A. $Mn _2 O _7$ is an oil at room temperature
B. $V _2 O _4$ reacts with acid to give $VO _2^{2+}$
C. $CrO$ is a basic oxide
D. $V _2 O _5$ does not react with acid
Choose the correct answer from the options given below :
(1) A, B and D only
(2) A and C only
(3) A, B and C only
(4) B and C only
Show Answer
Answer (2)
Solution
(A) $Mn _2 O _7$ is green oil at room temperature.
(B) $V _2 O _4$ dissolve in acids to give $VO^{2+}$ salts.
(C) $CrO$ is basic oxide
(D) $V _2 O _5$ is amphoteric it reacts with acid as well as base.
