AS Revision Quiz Part 1

Which equation represents an initiation step?

• A

• B

• C

• D

Which is a pair of functional group isomers?

• A

• B

• C

• D

Which compound does not show stereoisomerism?

• 1,2-dichloropropene

• 1,2-dichloropropane

• 1,3-dichloropropene

• 1,3-dichloropropane

How many structural isomers are there with the molecular formula C₃H₆BrCl?

• 4

• 5

• 6

• 7

How many structural isomers with the molecular formula C₅H₁₀O react with Tollens’ reagent?

• 3

• 4

• 5

• 6

Which statement is correct about the fractional distillation of crude oil?

• A zeolite catalyst is used.

• Each fraction contains a mixture of hydrocarbons.

• Gaseous fractions are formed by breaking covalent bonds.

• The fractionating column is hottest at the top.

Which catalyst is used in the catalytic cracking of alkanes?

• Concentrated phosphoric acid

• Iron

• Nickel

• Zeolite

Which molecule is not produced when ethane reacts with bromine in the presence of ultraviolet light?

• C₂H₄Br₂

• HBr

• H₂

• C₄H₁₀

Which of these substances does not contribute to the greenhouse effect?

• Unburned hydrocarbons

• Carbon dioxide

• Water vapour

• Nitrogen

Which equation is a propagation step in the conversion of trichloromethane into tetrachloromethane by reaction with chlorine in the presence of ultraviolet light?

• CHCl₃ + Cl₂ ⟶ CCl₄ + HCl

• ●CCl₃ + ●Cl ⟶ CCl₄

• CHCl₃ + ●Cl ⟶ CCl₄ + ●H

• ●CCl₃ + Cl₂ ⟶ CCl₄ + ●Cl