MHT CET Chemistry 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 liberates iodine from iodides III. Potassium dichromate is used as a titrant for ions. IV. Ammonium dichromate on heating undergoes exothermic decomposition to give . Choose the correct option.
Answer: (B)
Solution
I is false (in acidic solution chromate changes to dichromate, and dichromate changes to chromate in alkaline solution); II is true ( oxidises to ), III is true (it is a standard
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