Assertion :Pure water obtained from different states of India always contains hydrogen and oxygen in the ratio of $1 : 8$ by mass. Reason: The total mass of reactants and products during chemical change is always the same.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Pure water obtained from different states of India always contains hydrogen and oxygen in the ratio of 1:8 by mass.
This illustrates the law of definite composition.
The total mass of reactants and products during chemical change is always the same.
This illustrates the law of conservation of mass.
Thus, Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion (A) Rate constant determined from Arrhenius equation are fairly accurate for simple as well as complex molecules.

Reason (R) Reactant molecules undergo chemical change irrespective of their orientation during collision.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

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