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Q: Almost 98% of Earth's crust is made up of eight elements. Which of the following does NOT among these elements?
  • A. Carbon
  • B. Silicon
  • C. Calcium
  • D. Oxygen
Correct Answer: Option A - Elements Percentage Oxygen 46.6% Silicon 27.7% Aluminium 8% Iron 5.8% Potassium 2.8% Calcium 2.3% Magnesium 2.1% Sodium 0.3%
A. Elements Percentage Oxygen 46.6% Silicon 27.7% Aluminium 8% Iron 5.8% Potassium 2.8% Calcium 2.3% Magnesium 2.1% Sodium 0.3%

Explanations:

Elements Percentage Oxygen 46.6% Silicon 27.7% Aluminium 8% Iron 5.8% Potassium 2.8% Calcium 2.3% Magnesium 2.1% Sodium 0.3%