Multiple choice general knowledge science & technology

Solar cells are simple photovoltaic devices that convert solar energy directly into electricity and are manufactured from the second-most abundant element in the earth’s crust. Name it.

  1. Bauxite

  2. Silicon

  3. Calcium

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Silicon is the second most abundant element in Earth's crust (about 28% by mass) after oxygen. It is the primary material used in manufacturing photovoltaic solar cells due to its semiconductor properties and abundance. Bauxite is an aluminum ore, calcium is a reactive metal, and neither is used as the primary material in standard solar cells.

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