Question

Which of the following statement (s) is /are correct?
(I) In acidic solution dichromate ions are converted to chromate ions .
(II) An acidified solution of `K_(2)Cr_(2)O_(7)` liberates iodine from iodides.
(III) Potassium dichromate is used as a titrant for `Fe^(2+)` ions.
(IV) Ammonium dichromate on heating undergo exothermic decomposition to give `Cr_(2)O_(3)`.
Choose the correct option .
A. I,II and III
B. II,III, and IV
C. I,II and IV
D. II and III

Answer 1

Correct Answer - C
Potassium dichromate is not used as a titrant for `Fe^(2+)` ion. Hence I,II and IV are correct.