Which of the following hydrocarbons is used as a solvent in dry cleaning?
a) Benzene
b) Ethylene
c) Methane
d) Propylene
Answer: a) Benzene

Which of the following is a property of alkyne hydrocarbons?
a) They contain single bonds
b) They are unsaturated hydrocarbons
c) They have the general formula CₙH₂ₙ₊₂
d) They are less reactive than alkenes
Answer: b) They are unsaturated hydrocarbons

Which of the following hydrocarbons is used in the production of synthetic rubber and tires?
a) Ethylene
b) Propylene
c) Butadiene
d) Styrene
Answer: c) Butadiene

Which reaction is used to convert alkanes to alkenes?
a) Cracking
b) Polymerization
c) Hydrogenation
d) Halogenation
Answer: a) Cracking

Which of the following hydrocarbons is used in the production of synthetic fibers such as nylon?
a) Ethylene
b) Benzene
c) Propylene
d) Butadiene
Answer: b) Benzene

Which of the following is a characteristic of alkanes?
a) They contain one or more double bonds
b) They have the general formula CₙH₂ₙ₊₂
c) They are unsaturated hydrocarbons
d) They are highly reactive
Answer: b) They have the general formula CₙH₂ₙ₊₂

Which of the following hydrocarbons is used as a starting material for the production of synthetic rubber?
a) Methane
b) Ethylene
c) Propylene
d) Butadiene
Answer: d) Butadiene

The process of combining smaller hydrocarbons to form larger ones is called:
a) Cracking
b) Hydrogenation
c) Polymerization
d) Halogenation
Answer: c) Polymerization

Which of the following hydrocarbons has a sweet smell and is used as a solvent in nail polish remover?
a) Methane
b) Ethylene
c) Acetone
d) Propylene
Answer: c) Acetone

Which type of bond is present in alkynes?
a) Single bonds
b) Double bonds
c) Triple bonds
d) Quadruple bonds
Answer: c) Triple bonds