निम्नलिखित अभिक्रिया पर विचार कीजिए, जिसका दर व्यंजक नीचे दिया गया है। \(\mathrm{A}+\mathrm{B} \rightarrow \mathrm{C}\) दर \(=\mathrm{k}[\mathrm{A}]^{1 / 2}[\mathrm{~B}]^{1 / 2}\) अभिक्रिया को \(A\) और \(B\) प्रत्येक की \(1 \mathrm{M}\) सांद्रता लेकर प्रारंभ किया जाता है। यदि दर स्थिरांक \((k)\) \(4.6 \times 10^{-2} \mathrm{~s}^{-1}\) है, तो \(A\) को \(0.1 \mathrm{M}\) होने में लगा समय _______ sec है। (निकटतम पूर्णांक)

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.