Statement - I: The order of a reaction may be defined as the sum of the powers to which the concentration terms are raised.
Statement - II: Order may be zero, positive, negative and greater than three.

Both statements are true Statement - II is the correct explanation of Statement - I

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Both statements are true but Statement -II is not the correct explanation of Statement - I

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Statement - I is true but Statement - II is false

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Statement - I is false but Statement - II is true

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Solution

The correct option is B Both statements are true but Statement -II is not the correct explanation of Statement - I
rate law for any reaction $A + B \to C + D$ is given by
$r a t e = k [A]^{x} [B]^{y}$
So order of the reaction is given as $o r d e r = x + y$
The values of x and y can be be a whole number, fraction and it can be positive and negative.

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Statement - I: The order of a reaction may be defined as the sum of the powers to which the concentration terms are raised.Statement - II: Order may be zero, positive, negative and greater than three.

Statement - I: The order of a reaction may be defined as the sum of the powers to which the concentration terms are raised.
Statement - II: Order may be zero, positive, negative and greater than three.