Which of the following chemical is known as "Philosophers Wool" :

Options :
  1. Zinc oxide
  2. Sulphur dioxide
  3. Magnesium Oxide
  4. Nitric Oxide
Answer and Explanation :-

Answer: Option 1

Explanation:

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We'll squeeze every second that we can from our lives, because we're young, and we have plenty of years to grow. We'll grow until we're braver. We'll grow until our bones ache and our skin wrinkles and our hair goes white, and until our hearts decide, at last, that it's time to stop.
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