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Section D (Assertion-Reason)
\( \mathrm{P} \)
The following questions consist of two statements.
W Mark the answer as follows.
(a) If both statements are CORRECT, and Statement II is the CORRECT explanation of Statement I.
(b) If both statements are CORRECT, and Statement II is CORRECT the CORRECT explanation of Statement I.
(c) If Statement I is CORRECT, but Statement II is INCORRECT.
(d) If Statement I is IN̂CORRECT, but Statement II is CORRECT.

Statement I: During a chemical reaction, the total moles remain constant.
Statement II: During a chemical reaction, the total mass remains constant.
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