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JEE Main 2 September 2020, Shift 2, Chemistry Q49

Question 49 of 75 in this shift, Chemistry question 24 of 25.

The oxidation states of transition metal atoms in

\mathrm{K_2Cr_2O_7}

\mathrm{KMnO_4}

and

\mathrm{K_2FeO_4}

, respectively, are

x

y

and

z

. The sum of

x

y

and

z

is __________.

Official answer

19.00

NTA final key (Sep 2020).

Same idea in other shifts