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NEET levelSingle correct optionDifficulty 1 of 3ck006

The unit of the rate constant of a first order reaction is

A $mol L^{- 1} s^{- 1}$
B $L mo l^{- 1} s^{- 1}$
C $mol s^{- 1}$
D $s^{- 1}$

Answer: D

For first order, rate

= k [A]

, so

k = rate / [A] = mol L^{- 1} s^{- 1} / mol L^{- 1} = s^{- 1}

.

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