1. Lead pencils contain 0% lead
2. Silver paint contains aluminum, not silver
3. Oxygen is the most abundant element in the Earth’s crust
4. But the most abundant element in the Universe is hydrogen
5. White of egg acts as an antidote to mercuric chloride (HgCl2) poisoning
6. Artificial diamond is prepared by crystallization of sugar charcoal under high pressure
7. Carbogen (95% O2 + 5% CO2) is used for artificial respiration
8. Rolled gold is a mixture of 90% copper and 10% aluminum