Lesson 3.3.2.1
3.3.2.1 Fractional distillation of crude oil Quiz: AQA Chemistry, Unit 3
20 questions
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Lesson 3.3.2.1, Fractional distillation of crude oil: 20 multiple choice questions for the AQA Chemistry (7405), Unit 3: Organic chemistry, written with Revision Ninja.
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The 20 questions
-
Which main type of chemical compounds is present in crude oil?
- Alkene hydrocarbons
- Alkane hydrocarbons
- Cycloalkenes
- Aromatic alcohols
-
What physical property is used to separate the components of crude oil by fractional distillation?
- Colour
- Boiling point
- Solubility in water
- Electrical conductivity
-
How does the boiling point of unbranched alkanes change as chain length increases?
- It decreases
- It remains constant
- It increases
- It fluctuates randomly
-
Which fraction from crude oil has the lowest boiling point and is used for bottled gas?
- Diesel oil
- Refinery gas
- Bitumen
- Lubricating oil
-
Which fraction from fractional distillation of crude oil is the most viscous?
- Petrol
- Bitumen
- Refinery gas
- Kerosene
-
Where in a fractional distillation column do fractions with higher boiling points condense?
- Outside the column
- At the top
- In the condenser
- Near the bottom
-
Which of these is an alkane?
- Ethene
- Propyne
- Octane
- Butene
-
Why are alkane molecules classified specifically as saturated hydrocarbons?
- Contains oxygen atoms
- Only single bonds
- Triple C-C bonds
- Double C=C bonds
-
Which fraction of crude oil is used mainly as fuel for road vehicles?
- Lubricating oil
- Refinery gas
- Bitumen
- Petrol
-
Which fraction of crude oil is used to make road surfaces?
- Naphtha
- Bitumen
- Petrol
- Kerosene
-
Which alkane has the molecular formula C8H18 and is a component of petrol?
- Propane
- Octane
- Decane
- Methane
-
What is the general formula of an alkane with 12 carbon atoms?
- C12H28
- C12H26
- C12H24
- C12H22
-
What is the mass of one mole of octane, C8H18? (Ar: C = 12.0, H = 1.0)
- 114 g
- 128 g
- 142 g
- 98 g
-
Which fraction of crude oil is used as the main feedstock for cracking?
- Bitumen
- Diesel oil
- Refinery gas
- Naphtha
-
Which fraction from the fractional distillation of crude oil is most suitable for jet engines?
- Bitumen
- Refinery gas
- Kerosene
- Lubricating oil
-
What type of process is the fractional distillation of crude oil?
- Chemical reaction
- Physical process
- Thermal cracking
- Nuclear process
-
Why does hexane have a higher boiling point than pentane?
- Hydrogen bonding
- Ionic bonding
- Stronger van der Waals
- Dipole-dipole forces
-
Why is crude oil classified as a finite resource?
- Forms very slowly
- Burns rapidly
- Contains toxic compounds
- Cannot be cracked
-
A column of crude oil fractions has a temperature of 350 C at the bottom and 25 C at the top. Which fraction is collected near the top?
- Lubricating oil
- Bitumen
- Heavy fuel oil
- Refinery gas
-
What causes longer-chain alkanes to have higher boiling points?
- Stronger covalent bonds
- Greater surface area
- Higher molecular charge
- Branching of chains
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