Properties of Fractions from Crude Oil

What happens to the boiling point of fractions as you move up the fractionating tower?

• It decreases.

• It remains constant.

• It fluctuates randomly.

• It increases.

How does the viscosity of fractions change from the base to the top of the tower?

• It fluctuates.

• It remains the same.

• It becomes more viscous.

• It becomes less viscous.

As you move up the fractionating tower, how does the color of the fractions change?

• It remains unchanged.

• It becomes more colorful.

• It becomes lighter.

• It becomes darker.

Which property of fractions increases as you move up the tower, making them easier to ignite?

• Viscosity

• Smokiness

• Boiling point

• Flammability

What is the key factor that links the properties of color, smokiness, boiling point, viscosity, and flammability?

• Length of the hydrocarbon chain

• Density

• Pressure

• Temperature