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Some Basic Concepts of Chemistry question

2022 · 26 Jul · Shift 2 · Q1
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Some Basic Concepts of Chemistry question

2022 · 26 Jul · Shift 2 · Q1

JEE MainChemistrySome Basic Concepts of ChemistryMCQ+4 / −1
Hemoglobin contains 0.34%0.34 \%0.34% of iron by mass. The number of Fe atoms in 3.3 g3.3 \mathrm{~g}3.3 g of hemoglobin is (Given: Atomic mass of Fe is 56 u,NA=6.022×1023 mol−156 \,\mathrm{u}, \mathrm{N}_{\mathrm{A}}=6.022 \times 10^{23} \mathrm{~mol}^{-1}56u,NA​=6.022×1023 mol−1.)
  1. A
    1.21×1051.21 \times 10^{5}1.21×105
  2. B
    12.0×101612.0 \times 10^{16}12.0×1016
  3. C
    1.21×10201.21 \times 10^{20}1.21×1020
  4. D
    3.4×10223.4 \times 10^{22}3.4×1022
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