JEE Main - Previous Year Papers JEE MAIN 2022 JEE MAINS 28 JULY 2022 PAPER SHIFT -1 Single Correct MCQ
Published on: August 14, 2026

For kinetic study of the reaction of iodide ion with at room temperature:

A
Always use freshly prepared starch solution. , , ,
B
Always keep the concentration of sodium thiosulphate solution less than that of KI solution. , , (E) only
C
Record the time immediately after the appearance of blue colour. only
D
Record the time immediately before the appearance of blue colour. (E) Always keep the concentration of sodium thiosulphate solution more than that of KI solution. Choose the correct answer from the options given below: , (E) only , (E) only

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The correct answer is:
A

The is recorded immediately after the blue colour appears.

is kept in limited amount.

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