Q.1
Crude oil is a mixture of what?
  • Two or more elements or compounds not chemically combined together
  • Two or more elements or compounds chemically combined together
  • Hydrocarbons combined together with water and gas
  • Mainly alkanes
Q.2
What are hydrocarbons?
  • Long chain molecules made from water and carbon
  • Short chain molecules made from water and carbon
  • Chemicals made from hydrogen and carbon chemically joined together
  • A food group that provides energy
Q.3
Which of the following best describes most of the hydrocarbons in crude oil?
  • Saturated
  • Soaked
  • Soggy
  • Unsaturated
Q.4
Which of the following best describes the saturated hydrocarbons in oil?
  • Alcohols
  • Aldehydes
  • Alkenes
  • Alkanes
Q.5
The formula of any alkane can be worked out from which of the following?
  • CnH2n
  • CnH3n
  • CnH2n+2
  • CnHn
Q.6
How are the different hydrocarbons separated from crude oil?
  • Filtering
  • Centrifuging
  • Fractional distillation
  • Separating funnel
Q.7
Which of the following lists contains the words missing from the following passage in the correct order? The many __________ in crude oil may be separated into fractions by ___________ the oil and allowing it to condense at a number of different ___________. This process is ___________ distillation.
  • temperatures, evaporating, hydrocarbons, fractional
  • hydrocarbons, evaporating, temperatures, fractional
  • chemicals, evaporating, hydrocarbons, fractional
  • fuels, heating, places, evaporating
Q.8
Which of the following best describes the smaller hydrocarbons when compared to large hydrocarbons?
  • The smaller hydrocarbons are more viscous
  • The smaller hydrocarbons are less flammable
  • The smaller hydrocarbons are more volatile
  • The smaller hydrocarbons produce more soot when they burn
Q.9
The process of breaking down of the larger hydrocarbons to smaller, more useful chemicals is called what?
  • Smashing
  • Cracking
  • Splitting
  • Breaking
Q.10
Crude oil is made from alkanes. During cracking what other type of hydrocarbon is produced and how is it different from the alkanes?
  • Ethene is produced and it is colourless
  • Alkyne is produced and it is odourless.
  • Alcohol is produced and it is inflammable
  • Alkene is produced and it has a double covalent bond
0 h : 0 m : 1 s