Question 1

Which of the following could not be formed when methylamine is added to ethanoyl chloride?

  A  

HCl

  B  

CH3NH3+Cl-

  C  

CH3CONH2


  D  

CH3CONHCH3


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Question 2

Part of the structure of a protein is shown.

How many different amino acids were used to form this part of the structure?

  A  

3

  B  

4

  C  

5

  D  

6

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Question 3

Glycine and alanine are the two simplest amino acids.

Glycine and alanine combine to form two possible dipeptides.

What are the structures of these dipeptides?

  A  

H2NCH2COONHCH(CH3)COOH and H2NCH(CH3)COONHCH2COOH

  B  

H2NCH2CONHCH(CH3)COOH and H2NCH(CH3)COONHCH2COOH

  C  

H2NCH2COONHCH(CH3)COOH and H2NCH(CH3)CONHCH2COOH

  D  

H2NCH2CONHCH(CH3)COOH and H2NCH(CH3)CONHCH2COOH

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Question 4

Phenylamine reacts rapidly with dilute sulfuric acid. The reaction is

  A  

electrophilic addition

  B  

electrophilic substitution

  C  

hydrolysis

  D  

neutralisation

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Question 5

The cyclic compound M is heated with dilute hydrochloric acid.

What are the products of the reaction?

  A  

HOCH2CO2H and H2NCH2CO2H

  B  

HO2CCH2OH and HO2CCH2NH3+

  C  

H2NCOCH2OH and HOCH2CHO

  D  

HOCH2CONH3+and HOCH2CHO

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Question 6

What is the organic product when ethanamide, CH3CONH2, is boiled with excess aqueous sodium hydroxide?

  A  

CH3CN

  B  

CH3COO–NH4+

  C  

CH3CONH-Na+

  D  

CH3COO-Na+

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Question 7

Methylamine, CH3NH2, has very similar chemical properties to ammonia, NH3.

Methylamine reacts with hydrogen chloride to form a white crystalline salt, methylammonium chloride.

CH3NH2 + HCl ➔ CH3NH3+Cl-

A sample of methylammonium chloride is heated with aqueous sodium hydroxide.

What are the products?

  A  

ammonia, sodium chloride, and water

  B  

ammonia, sodium hydrogencarbonate, and sodium chloride

  C  

methylamine, hydrogen chloride, and water

  D  

methylamine, sodium chloride, and water

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Question 8

The skeletal formula of an organic compound is shown below.

This compound is

  A  

an amino acid

  B  

an amide

  C  

a primary amine

  D  

a secondary amine

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Question 9

Which statement is not correct about amines?

  A  

the lone pair on the nitrogen allows them to act as nucleophiles

  B  

they react with carboxylic acids to form amides

  C  

they form hydrogen bonds with water

  D  

they accept protons from water molecules

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Question 10

Which statement about DNA is not true?

  A  

DNA is a condensation polymer

  B  

adenine and uracil join by 2 hydrogen bonds in DNA

  C  

guanine and cytosine join by 3 hydrogen bonds in DNA

  D  

the backbone of DNA is made of phosphate and deoxyribose

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Question 11

Which statement describes the secondary structure of a protein?

  A  

the types of amino acids present

  B  

the sequence of the amino acids


  C  

attractions between groups causing folding of the protein helix


  D  

hydrogen bonds causing a helix or sheet

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Question 12

Which reagents could be used to prepare CH3CH2CONHCH3?

  A  

CH3CH2COCl + CH3NH2

  B  

CH3CH2CONH2 + CH3Br

  C  

CH3CH2COONa + CH3NH2


  D  

CH3CH2COCH3 + NH3

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Question 13

Aqueous solutions of ammonia, ethylamine and phenylamine are prepared.

Each solution has the same concentration.

Which is the correct order for the pH values of these solutions?

  A  

ammonia > ethylamine > phenylamine

  B  

ammonia > phenylamine > ethylamine


  C  

ethylamine > ammonia > phenylamine


  D  

ethylamine > phenylamine > ammonia

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Question 14

How many isomers are there of C3H9N?

  A  

2

  B  

3

  C  

4

  D  

5

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Question 15

A two-step preparation of propylamine is shown.

bromoethane ➔ X ➔ propylamine

What is X?

  A  

CH3CH2CH2NH2

  B  

CH3CH2CN


  C  

CH3CH2CH2Br

  D  

CH3CH2NH2

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