everyday science MCQ #2793

Which element is the most abundant in Earth's crust?

everyday science MCQ #2793

  1. Question 1

    Q1. Which element is the most abundant in Earth's crust?

    • A) Oxygen
    • B) Iron
    • C) Silicon
    • D) Aluminum

    Answer: Oxygen

    Explanation: Oxygen is the most abundant element in Earth's crust at approximately 46% by mass, present mainly in silicate and oxide mineral compounds.