Question

\(t_{99.9%}\) with respect to \(t_{90%}\) for a first order reaction is:

• A. Two
• B. One
• C. Three
• D. Four

Hint:

For first-order reactions: \[ t_{90%} : t_{99%} : t_{99.9%} = 1 : 2 : 3 \] This shortcut is extremely useful in MCQs.

Answer 1

The Correct Option is C