Rate constant of a reaction is  10 lit mole-1 min-1. Then the correct relation between half life and initial concentration for the reaction is

Units of K are  lit. mole-1 min-1General units of ‘K’ =  mole/lit1−ntime−1mole1−n litn−1time−1 = mole−1litmin−1n = 2it is a second order reactionGeneral condition       t12 ∝ a1-nthus  t12 ∝ 1a