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प्रथम कोटि की अभिक्रिया के 90% पूर्ण होने में लगने वाला समय लगभग होता है –

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प्रथम कोटि की अभिक्रिया के 90% पूर्ण होने में लगने वाला समय लगभग होता है –

(i) अर्द्धआयु का 2.2 गुना 

(ii) अर्द्धआयु का 4.4 गुना 

(iii) अर्द्धआयु का 3.3 गुना 

(iv) अर्द्धआयु का 1.1 गुना

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(iii) अर्द्धआयु का 3.3 गुना

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