Organic Chemistry & Analysis Random Retrieval

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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.

2 / 10

The nitrating agent for benzene is a mixture of concentrated sulfuric and nitric acids. This mixture produces:

3 / 10

NOT ON OCR SPEC. Hint: Esters can be hydrolysed and the initial stage in the mechanism is nucleophilic attack using an oxygen lone pair of the water molecule. RO- is the leaving group and becomes ROH.

18O is a ‘radiolabelled oxygen’.

The reaction of ethyl ethanoate with H218O produces:

4 / 10

Which of these characteristics of polymers accounts for the difference between low density and high density poly(ethene)?

[1] the average length of the polymer chains

[2] the type of intermolecular (interchain) forces

[3] the number and size of bulky side groups

[4] the extent of chain branching

5 / 10

In a peptide made up of a sequence of four amino acids the number of peptide bonds is:

6 / 10

The reaction mixture must be completely dry during a Friedel-Crafts acylation or alkylation reaction to:

7 / 10

The reaction using a mixture of benzene and ethene in the presence of hydrogen chloride and aluminium chloride produces an important intermediate in the manufacture of:

8 / 10

What is the organic product when benzene reacts with ethanoyl chloride in the presence of aluminium chloride?

9 / 10

Which of these aldehydes are isomers of pentan-2-one?

(i) pentanal

(ii) 2-methylbutanal

(iii) 3-methylbutanal

(iv) 2,2-dimethylbutanal

10 / 10

Treating ethanal with hydrogen cyanide in the presence of some KCN and then hydrolysing the product with hot hydrochloric acid (which converts a cyano / nitrile group RCN, to RCOOH) produces:

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