Question 1

Which one of the following is the correct structural formula for cyclohexane?

Accepted Answer

C₆H₁₂

Answer

C₆H₁₄

Answer

C₅H₁₀

Answer

C₆H₁₀

Question 2

The heat produced by a kilogram of fuel is known as its

Accepted Answer

kilogram calorific value

Answer

heat of reaction

Answer

heat of combustion

Answer

octane number

Question 3

What is the principal component of natural gas?

Accepted Answer

Methane (CH₄)

Answer

Ethane (C₂H₆)

Answer

Propane (C₃H₈)

Answer

Ethyne (C₂H₂)

Question 4

Which one of the following compounds is saturated?

Accepted Answer

2,3-diethylbutane

Answer

2,2,4-trimethylpent-2-ene

Answer

2-methylbutyne

Answer

Ethyne

Question 5

The general name for the group of compounds that contain carbon and hydrogen single bonds only is

Accepted Answer

alkanes

Answer

alkynes.

Answer

alkenes

Answer

alcohols.

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