Which of the following reaction will have fractional order for $A_2$ or $B_2$ ?

  • A

    $A_2  \rightleftharpoons  A + A$  (fast)

    $A + B_2  \rightleftharpoons  AB + B$  (slow)

    $A + B  \rightleftharpoons  AB$  (fast)

  • B

    $A_2 \rightleftharpoons C$  (slow)

    $C + B_2 \rightleftharpoons D $  (fast)

    $D + A_2 \rightleftharpoons $ Products

  • C

    $B_2 \rightleftharpoons B + B$  (fast)

    $A_2 + B \rightleftharpoons AB + A $  (slow)

    $AB \to $ Products

  • D

    Both $(A)$ and $(C)$

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  • [JEE MAIN 2019]

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