When initial concentration of a reactant is doubled in a reaction, its half-life period is not affected. The…

When initial concentration of a reactant is doubled in a reaction, its half-life period is not affected. The order of the reaction is:
  1. Zero
  2. First
  3. Second
  4. More than zero but less than first

Solution

t1/21a0n-1
t1/2 is independent of initial concentration i.e.
t1/21a01-1 (is constant)
i.e n = 1 (order of reaction)

Asked in: NEET 2015 (Phase 1)

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