The video explains the process of removing volatile components from coal to produce coke, a solid with a high carbon content. Coke is more efficient and cleaner-burning than coal, making it a crucial fuel for various engines during the Industrial Revolution and beyond.

What is the primary component left in coke after the removal of volatile substances?

• Carbon

• Hydrogen

• Oxygen

• Sulfur

How does coke compare to coal in terms of burning?

• Coke burns less efficiently and more polluting than coal.

• Coke burns more efficiently and cleaner than coal.

• Coke burns at the same efficiency as coal.

• Coke does not burn as it is a solid.

For how long has coke been an important fuel?

• Only during the Industrial Revolution

• A few decades

• Hundreds of years

• Since the 21st century

Which of the following engines did NOT use coke as a fuel during the Industrial Revolution?

• Electric engines

• Locomotives

• Steam engines

• Blast furnaces

What was one of the main uses of coke during the Industrial Revolution?

• For lighting streets

• In blast furnaces

• As a food preservative

• In textile manufacturing