Multiple choice

Coal ash is used to manufacture which material in a semiconductor?

  1. Germanium

  2. Tin

  3. Helium

  4. Silicon

  5. Carbon
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A Correct answer
Explanation

Germanium is a chemical element with symbol Ge and atomic number 32. It is a lustrous, hard, grayish-white metalloid in the carbon group, which is chemically similar to its group neighbours, tin and silicon.

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