Organic chemistry - alkanes, haloalkanes, alkenes, OH, COOH

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1. The name of the compound with the semi-structural formula shown on the right is
A) 1-chloro-4,4-dimethylbutane B) 1-chlorohexane C) 1-chloro-4-methylhexane D) 5-chloro-2-methylpentane E) 1-chloro-4-methylpentane

2. The name of the organic compound represented by the image on the right is
A) 1,1,1-trimethylethane B) 2,2-dimethylpropane C) tetramethylmethane D) 2-methylbutane E) 1-methylpropane

3. The diagram on the right shows the structure of an organic compound. The name of the compound is?
A) 4-bromo-2,3-dichloro-2-ethylbutane B) 4-bromo-1,2-dichloro-2-methylbutane C) 4-chloro-1,2-dibromo-2-methylbutane D) 4-bromo-3-dichloro-2-methylbutane E) 4-bromo-2-dichloro-2-methylbutane

4. The diagram on the right shows the structure of an organic compound. The name of the compound is?
A) 2,2,4-trimethylpentane B) 2-methylheptane C) 2,2-dimethylheptane D) 4-methyldecane E) 2,2,4-trimethylhexane

5. The diagram on the right shows the structure of an organic compound. The name of the compound is?
A) 2-methyl-2-ethylheptane B) 2-methyl-4-ethylheptane C) 4-dimethyl-2-ethylhexane D) 2-methyl-4-methylhexane E) 2,2-dimethyl-4-ethylhexane

6. The diagram on the right shows the structure of an organic compound. The name of the compound is?
A) 4-ethyl-2,3-methylheptane B) 2-methyldecane C) 4-ethyldecane D) 4-methyldecane E) 2-ethyldecane

7. The diagram on the right shows the structure of an organic compound. The name of the compound is?
A) 4,4-dimethylheptane B) 4-ethylheptane C) octane D) 5,5-dimethylhexane E) 5,5-dimethylpentane

8. The diagram on the right shows the structure of an organic compound. The name of the compound is?
A) 5-methylhept-2-ene B) 5-methylheptane C) 5-methylhept-1-ene D) 2-ethylhept-1-ene E) 2-methylheptane

9. The diagram on the right shows the structure of an organic compound. The name of the compound is?
A) 1-methylprop-1-ene B) Butane C) But-4-ene D) Hex-2-ene E) 3-methylbut-1-ene

10. Look at the the diagram on the left of two organic compounds. Which statement below is true?

A) Molecules "A" and "B" are isomers and are called propanoic acid and butanoic acid respectively. B) Molecules "A" and "B" are isomers and are called butanol and propanol respectively. C) Molecules "A" and "B" are isomers of the same organic acid molecule. D) Molecules "A" and "B" are isomers and are called propan-1-ol and propan-2-ol respectively. E) Molecules "A" and "B" are not isomers and are called butanol and propan-2-ol respectively.

11. Consider the diagrams on the right representing two organic compounds. Which statement below is true?

A) Molecules "A" and "B" are isomers of hexane called 2,3-dimethylbutane and 3-methylpentane respectively. B) Molecules "A" and "B" are isomers of pentane called 1,2,2-trimethylpropane and 2-ethylbutane respectively. C) Molecules "A" and "B" are isomers of heptane called 1,1,2-trimethylbutane and 2-ethylbutane. D) Molecules "A" and "B" are isomers of heptane called 2,2,2-trimethylbutane and 2-ethylbutane. E) Molecules "A" and "B" are isomers of hexane and have the names 2,4-dimethylbutane and 2-ethylbutane respectively.

12. Which one of the following structural formulae represents 2-butanol?
A) A B) B C) C D) D E) None of the structural formulae.

13. Which one of the following structural formulae represents 2-methylpropene?.
A) A B) B C) C D) D E) None of the structural formulae.

14. Butane and methylpropane are:
A) alkenes; B) isomers; C) carboxylic acids; D) alcohols; E) polymers.

15. What is the semi-structural formula of the compound shown on the right?
A) CH3CH2CH2COOH B) CH3CH2COOHCH2 C) C4O2H8 D) C2OH4 E) CH3CH2CH2CH2COOH

16. Consider the 4 molecules pictured on the right. Which one comment is true?
A) Molecule "A" is an alcohol. B) Molecule "B" represents an unsaturated hydrocarbon. C) Molecules "A" and "C" represent unsaturated hydrocarbons. D) Molecule "D" represents a carboxylic acid. E) Molecules "A" and "C" represent alcohols.

17. What term best applies to the molecules pictured on the right?
A) Carboxylic acids. B) Alcohols. C) Alkanes. D) Isomers. E) Unsaturated.

18. Which compound is an organic acid?
A) CH3COOCH3 B) CH3CH2CH2OH C) CH3CH2COOH D) CH3CH2OCH3 E) CH3CHOHCH3

19. Hydrocarbons contain, apart from carbon,
A) hydrogen B) nitrogen C) oxygen D) water E) fluorine