Which of the following is the simplest alkene?
a) Ethylene
b) Propylene
c) Butylene
d) Methane
Answer: a) Ethylene

The process of breaking down larger hydrocarbons into smaller ones is called:
a) Polymerization
b) Cracking
c) Hydrogenation
d) Isomerization
Answer: b) Cracking

Which of the following hydrocarbons has a triple bond?
a) Propene
b) Butene
c) Ethyne
d) Butyne
Answer: c) Ethyne

Which hydrocarbon has the general formula CₙH₂ₙ₋₂?
a) Alkanes
b) Alkenes
c) Alkynes
d) Aromatic hydrocarbons
Answer: c) Alkynes

Which of the following compounds is an example of an alkene?
a) Butane
b) Ethylene
c) Propane
d) Methane
Answer: b) Ethylene

The structural formula for butane is:
a) CH₄
b) C₂H₄
c) C₄H₁₀
d) C₆H₁₂
Answer: c) C₄H₁₀

Which of the following is not a characteristic of aromatic hydrocarbons?
a) They contain benzene rings
b) They are highly reactive
c) They have a sweet odor
d) They have alternating double bonds
Answer: b) They are highly reactive

Which of the following hydrocarbons is used as a fuel in vehicles?
a) Ethylene
b) Methane
c) Benzene
d) Ethyne
Answer: b) Methane

The reaction of alkenes with water in the presence of an acid catalyst to form alcohols is called:
a) Hydration
b) Hydrogenation
c) Dehydration
d) Halogenation
Answer: a) Hydration

Which of the following hydrocarbons is a gas at room temperature?
a) Propane
b) Octane
c) Butane
d) Hexane
Answer: a) Propane