Organic Chemistry & Analysis Random Retrieval

This quiz contains all the questions in the Organic Chemistry & Analysis section. The website will pick 10 questions at random.

1 / 10

Free-radical intermediates in the reaction of chlorine with methane include:

(i) CH₃^.

(ii) H^.

(iii) Cl^.

(iv) C^.

(i), (ii) and (iii)

(i) and (iii) only

(ii) and (iv) only

(iv) alone

2 / 10

The rate equation for the reaction of hydroxide ions with 2-bromo-2-methylpropane takes the form:

rate = k[C₄H₉Br].

This indicates that:

(i) the rate determining step involves hydroxide ions

(ii) doubling the concentration of the halogenoalkane doubles the rate of reaction

(iii) the reaction takes place in one step

(iv) the reaction takes place by the S_N1 mechanism (a 2 step mechanism)

(i), (ii) and (iii)

(i) and (iii) only

(ii) and (iv) only

(iv) alone

3 / 10

Which of these reactions involve heterolytic bond breaking

(i) propene with bromine

(ii) benzene with bromine

(iii) bromobutane with ammonia

(iv) ethane with bromine

(i), (ii) and (iii)

(i) and (iii) only

(ii) and (iv) only

(iv) alone

4 / 10

Which of these chemical species are electrophiles which add to alkenes?

(i) bromine molecules

(ii) sulfuric acid molecules

(iii) hydrogen bromide molecules

(iv) sulfate ions

(i), (ii) and (iii)

(i) and (iii) only

(ii) and (iv) only

(iv) alone

5 / 10

In which of these reactions between pairs of reagents is the bond breaking heterolytic?

(i) hydrogen bromide with propene

(ii) hydrogen bromide and butan-1-ol

(iii) sodium hydroxide with 1-bromopropane

(iv) bromine with hexane

(i), (ii) and (iii)

(i) and (iii) only

(ii) and (iv) only

(iv) alone

6 / 10

Which of these conversions is an example of nucleophilic substitution?

ethane to chloroethane

ethene to 1,2-dichloroethane

ethanol to bromoethane

ethanol to ethene

7 / 10

Mixing poly(chloroethene) with a plasticiser makes is suitable for use as:

(i) window frames

(ii) insulation for electric cables

(iii) water pipes

(iv) waterproof clothing

(i), (ii) and (iii)

(i) and (iii) only

(ii) and (iv) only

(iv) alone

8 / 10

The monomer which polymerises to form a plastic which has a smooth, slippery surface and is used to give cooking utensils a non-stick surface is:

C₆H₅-CH=CH₂

CH₃-CH=CH₂

CH₂=CHCl

CF₂=CF₂

9 / 10

The formation of a molecules of polythene from CH₂=CH₂ involves many thousands of:

addition reactions

condensation reactions

elimination reactions

substitution reactions

10 / 10

Which of these amino acids are chiral?

(i) CH₃CHNH₂CO₂H

(ii) C₆H₅CH₂CHNH₂CO₂H

(iii) HOCH₂CHNH₂CO₂H

(iv) CH₂NH₂CO₂H

(i), (ii) and (iii)

(i) and (iii) only

(ii) and (iv) only

(iv) alone

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