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ChemistryInteger+4 / -1Question 73 of 75

JEE Main 2026 · 6 Apr · Shift 1, Chemistry question 73

4.7 g of phenol is heated with Zn to give product X. If this reaction goes to 60% completion then the number of moles of compound X formed will be ________ ×10−2\times10^{-2}. (Nearest Integer)

(Given molar mass in g mol−1^{-1} : H:1, C:12, O:16)

Answer and worked solution

Official answer: 3

Reaction. Heating phenol with zinc dust gives benzene.

Moles. 4.7 g of phenol is 0.05 mol. At 60% completion, 0.05×0.6=0.030.05\times0.6=0.03 mol =3×10−2=3\times10^{-2} mol.

Answer: 3

Topics:PhenolsStoichiometry
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