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MCQMediumJEE Main 2023 · 11 April, Shift 1Enthalpies (Bond, Combustion, Formation…)

Chemistry Question from JEE Main 2023 · 11 April, Shift 1

Solid fuel used in rocket is a mixture of Fe2{}_2O3{}_3 and Al (in ratio 1:21 : 2) the heat evolved (KJ) per gram of the mixture is _____ (Nearest integer) Given ΔHf∘(Al2O3)=−1700 KJ mol−1\Delta H_f^{\circ}(Al_2O_3) = -1700 \, \text{KJ mol}^{-1} ΔHf∘(Fe2O3)=−840 KJ mol−1\Delta H_f^{\circ}(Fe_2O_3) = -840 \, \text{KJ mol}^{-1}

  • A

    2 KJ2 \, \text{KJ}

  • B

    3 KJ3 \, \text{KJ}

  • C

    4 KJ4 \, \text{KJ}

  • D

    5 KJ5 \, \text{KJ}

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