separating methods

What is the main purpose of the equipment used in simple distillation?

• To measure the temperature inside the flask

• To separate a liquid from a solution

• To provide a continuous flow of cold water

• To capture the vapor that is produced

What is the key difference between simple distillation and fractional distillation?

• The use of a fractionating column

• The need for a heating device

• The requirement for a thermometer

• The number of liquids being separated

What is the purpose of the water jacket in the condenser?

• To measure the temperature of the vapors

• To cool the vapors and cause them to condense

• To heat the mixture in the flask

• To maintain the pressure inside the flask

What is crude oil made up of?

• Minerals

  
  

• Gases

• Hydrocarbons

• Water

What is the main purpose of heating the crude oil in the fractional distillation process?

• To increase the viscosity of the oil

• To convert the oil into a gaseous state

• To separate the oil into its different compounds

• to remove impurities from the oil

Which of the following hydrocarbon fractions obtained from fractional distillation is described as being used for road surfacing?

• Diesel

• Petrol

• Bitumen

• Kerosene

Why are fossil fuels like crude oil considered "non-renewable" resources?

• They are found in limited geographical locations.

• They cannot be recycled or reused after extraction.

• They contribute to environmental pollution when burned.

• They are formed over an extremely long period of time.

What is the main purpose of the "cracking" process mentioned in the video?

• To increase the viscosity of heavy fuel oil

• To remove impurities from the different hydrocarbon fractions

• To break down longer-chain hydrocarbons into shorter, more useful ones

• To convert gaseous hydrocarbons into a liquid form for storage

What is the main purpose of paper chromatography?

• To separate different colors of ink

• To measure the speed of liquids

• To identify the chemicals in a mixture

• To test the strength of paper

Why do the chemicals in a sample move at different rates on the paper?

• They have different colors

• They have different sizes

• They have different solubilities

• They have different densities