Catalytic Cracking of Crude Oil

What is the main purpose of the catalytic cracking experiment shown?

• To create longer hydrocarbon chains from shorter ones.

• To break down long-chain alkanes into shorter-chain alkanes and alkenes.

• To demonstrate the combustion of hydrocarbons.

• To purify liquid paraffin.

What material is used to absorb the liquid paraffin at the start of the experiment?

• Cotton wool

• Glass beads

• Mineral wool

• Sand

What type of material serves as the catalyst in this cracking experiment?

• Liquid paraffin

• Mineral wool

• Silica-based materials like pumice stone

• Water

What is a critical step to prevent water from being sucked back into the hot boiling tube?

• Remove the delivery tube from the water before stopping heating.

• Stop heating the boiling tube before removing the delivery tube from the water.

• Ensure the boiling tube is completely cool before removing the delivery tube.

• Keep the delivery tube submerged in water at all times.