Chemistry NMDCAT MCQs Limiting and Excess Reactants
nmdcat.online July 2, 2026

41. In the reaction SiO₂ + 2C → Si + 2CO, 120 g of SiO₂ and 36 g of carbon are heated. The mass of silicon produced is (Si = 28, O = 16, C = 12)

A. 14 g
B. 28 g
C. 42 g
D. 56 g

📝 Explanation

Carbon is limiting. Si = 1.5 mol. Mass = 1.5 × 28 = 42 g.

📖 Additional Information

  • 14 g
  • 28 g
  • 42 g
  • 56 g

Carbon is limiting. Si = 1.5 mol. Mass = 1.5 × 28 = 42 g.

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