Solved: CHEMISTRY Question for NEET

neet CHEMISTRYHard

Which of the following statements are INCORRECT? A. All the transition metals except scandium form MO oxides which are ionic. B. The highest oxidation number corresponding to the group number in transition metal oxides is attained in $Sc_2O_3$ to $Mn_2O_7$ . C. Basic character increases from $V_2O_3$ to $V_2O_4$ to $V_2O_5$ . D. $V_2O_4$ dissolves in acids to give $VO_4^{3-}$ salts. E. $CrO$ is basic but $Cr_2O_3$ is amphoteric. Choose the correct answer from the options given below:

A and E only

B and D only

C and D only

B and C only

Step-by-Step Solution

Statement C is incorrect because basic character decreases as oxidation state increases (from $V_2O_3$ to $V_2O_5$ ). Statement D is incorrect because $V_2O_4$ dissolves in acids to give $VO^{2+}$ (vanadyl) ions, not $VO_4^{3-}$ (which is formed in basic conditions).

Practice Mode Available

Master this Topic on Sushrut

Join thousands of students and practice with AI-generated mock tests.

Get Started