1. What is added back into the iron after the impurities are removed in order to made steel?
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Other questions in this quiz
2. Where are transition metals found on the periodic table?
- Right block
- Centre block
- Far Right block
- Left block
3. How is crude oil formed?
- The buried remains of animals and plants
- the buried remains of mammals
- the buried remains of animals
- the buried remains of plants
4. What is an emulsion?
- A mixture of oil, water and an emulsifier
- A mixture of oil and water
- A mixture of oil and an emulsifier
- A mixture of an emulsifier and water
5. Which one is used in cooking oils?