MHT CET Chemistry Question (2026) — Solution

Step-by-step solution

The general formula for the unit of the rate constant k for an n-th order reaction is given by ( concentration )^ 1-n time ^ -1 . Using the standard units of concentration as mol dm ^ -3 and time as s , the unit of k becomes ( mol dm ^ -3 )^ 1-n s ^ -1 . The given unit of the rate constant is mol dm ^ -3 s ^ -1 . Comparing the powers of the concentration term, we get: 1 - n = 1 n = 0 Therefore, the reaction is a zero-order reaction. Answer: Zero-order reaction