Introduction to organic chemistry

1. Which of the following is not a type of structural isomerism?

Positional

Functional group

Geometric

Chain

Correct! Wrong!

2. Which of the following compounds is not an alkane?

C₂H₆

C₄H₈

C₇H₁₆

C₁₀H₂₂

Correct! Wrong!

3. Which statement is not a characteristic of a homologous series?

Same physical properties

Same functional group

Members differ from one another by CH₂

Same reactions

Correct! Wrong!

4. Which of the following compounds has the formula C₈H₁₈?

2-methylhexane

2,2,3-trimethlyoctane

2,2,3,3-tetramethylbutane

cyclooctane

Correct! Wrong!

5. Which of the following compounds is named correctly according to the IUPAC system of nomenclature?

1,1-chloro-2-bromoethane

1,1-dichloro-2-bromoethane

2-bromo-1-dichloroethane

2-bromo-1,1-dichloroethane

Correct! Wrong!

6. What is the name of the compound below?

2,3-dimethlybutane

2,3-dimethlypentane

1,1,2-trimethylbutane

3,4-dimethylpentane

Correct! Wrong!

7. How many isomers have the molecular formula C₆H₁₄?

3

4

5

6

Correct! Wrong!

8. Which compound is a positional isomer of 1-chloropentane?

CH₃CHCH₃CH₂CH₂Cl

CH₂ClC(CH₃)₃Cl

CH(CH₃)₂CHClCH₃

CH₃CH₂CHCH₃CH₂Cl

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9. For which hydrocarbon is the empirical formula the same as the molecular formula?

Ethane

Butene

Pentane

Hexane

Correct! Wrong!

10. Which alkane contains 18% hydrogen by mass?

Ethane

Propane

Butane

Pentane

Correct! Wrong!

Gemma Shearer