Alkanes

State the general formula of cycloalkanes.

Which of the following has the same molecular formula as cyclohexane?

How many structural isomers exist for the molecular formula C₆H₁₄?

What is the correct IUPAC name of the compound (CH₃)₂CHCH(CH₃)CH₃?

A long-chain alkane C₁₂H₂₆ is cracked to form one alkene and one alkane. If the alkene formed is ethene, what is the formula of the alkane produced?

Which equation correctly represents a reforming reaction?

In a fractionating column, why do longer-chain hydrocarbons condense near the bottom of the column?

Why is carbon monoxide toxic to humans?

Which two pollutants are primarily responsible for acid rain?

A scientist claims bioethanol is “fully carbon-neutral.” Which statement best challenges this claim?

Which equation correctly represents the combustion of hydrogen as a fuel?

In the propagation step Cl• + CH₄ → •CH₃ + HCl, what does the curly half-arrow represent?

Why is UV light essential for the reaction between methane and chlorine?

Which of the following is a termination step in the free radical substitution of methane with chlorine?

A student attempts to prepare pure 1-chlorobutane by reacting butane with chlorine under UV light. Suggest why this approach is unsuitable for synthesis.

Which equation represents the incomplete combustion of methane to produce carbon monoxide?

A car fitted with a catalytic converter still emits CO₂ even when running on petrol made from crude oil. Why is this CO₂ contribution not considered carbon-neutral?

Cyclobutane and but-1-ene have the same molecular formula C₄H₈. Which statement correctly distinguishes them?