Multiple choice general knowledge science & technology

What is also known as Philosopher's Wool?

  1. CuO

  2. ZnO

  3. PbO

  4. Fe2O3
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Zinc Oxide (ZnO) is known as 'Philosopher's Wool' because of the white, wool-like tufts it forms when zinc is burned in air. It was historically produced by alchemists.

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