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JEE Main 2019 · 10 Apr · Shift II

JEE Main 2019 Chemistry question on Some Basic Concepts of Chemistry

The minimum amount of O2(g)O_2(g) consumed per gram of reactant is for the reaction (Given atomic mass : Fe = 56, O = 16, Mg = 24, P = 31, C = 12, H = 1)
  1. A.
    C3H8(g)+5O2(g)⟶3CO2(g)+4H2O(l)C_3H_8(g) + 5O_2(g) \longrightarrow 3CO_2(g) + 4H_2O(l)
  2. B.
    P4(s)+5O2(g)⟶P4O10(s)P_4(s) + 5O_2(g) \longrightarrow P_4O_{10}(s)
  3. C.
    4Fe(s)+3O2(g)⟶2Fe2O3(s)4Fe(s) + 3O_2(g) \longrightarrow 2Fe_2O_3(s)
  4. D.
    2Mg(s)+O2(g)⟶2MgO(s)2Mg(s) + O_2(g) \longrightarrow 2MgO(s)
Show answer

Correct option: C

[JEE Main 2019 · 10 Apr · Shift II]

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