MCQ

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

Most modern cars are fitted with three-way catalytic converters in the exhaust system. Which three gases are removed by such a catalytic converter?

2009 Winter

MCQ

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

The drug cortisone has the formula shown. In addition to those chiral centres marked by an asterisk (*), how many other chiral centres are present in ...

2009 Winter

MCQ

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

The chlorine free radical takes part in the destruction of the ozone layer. Which statements about this free radical are correct?1. It is formed by th...

2009 Winter

MCQ

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

Which compound exhibits both cis-trans and optical isomerism?

2010 Summer

MCQ

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

Which compound exhibits both $\textit{cis-trans}$ and optical isomerism?

2010 Summer

Theory

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

(a) (i) Explain what is meant by structural isomerism. (ii) State two different features of molecules that can give rise to stereoisomerism.(b) Give ...

2010 Summer

Theory

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

Organic reactions involve substances which may beatoms, molecules, ions or free radicals.We also apply the termselectrophilic, nucleophilic, addition,...

2010 Summer

MCQ

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

Compound X reacts with ethanoic acid in the presence of an $H^+$ catalyst to produce the compound below. What is the molecular formula of compound ...

2010 Winter

MCQ

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

The compound 2-methylpropene, $C_4H_8$, is a monomer used in the production of synthetic rubber. In addition to 2-methylpropene, there are x other ...

2010 Winter

MCQ

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

The diagram shows the structure of the naturally-occurring molecule cholesterol. Which statements about cholesterol are correct? 1. The molecule cont...

2010 Winter

Theory

CH10 - GROUP 2

Group 2 metals form alkaline solutions in water.(a) (i) Write the equation for the reaction of calcium oxide with water..................................

2020 Spring

Theory

CH11 - GROUP 17

(a) Describe the trend in the colour of the Group 17 elements down the group. ..........................................................................

2020 Spring

Theory

CH17 - HYDROXY COMPOUNDS

(a) A series of reactions starting from glycerol is shown. (i) Suggest the reagent(s) and conditions for reaction 1. ....................................

2020 Spring

Theory

CH12 - AN INTRODUCTION TO THE CHEMISTRY OF TRANSITION ELEMENTS

Iron is a transition element in the fourth period. Iron forms compounds containing the ions $\text{Fe}^{2+}$ and $\text{Fe}^{3+}$.(a) (i) Define the t...

2020 Spring

Theory

CH10 - GROUP 2

(a) Group 2 metals form stable carbonates and sulfates.(i) State and explain the trend in the thermal stability of the Group 2 carbonates down the gro...

2020 Spring

Theory

CH6 - ELECTROCHEMISTRY

Gold is an unreactive metal that can only be oxidised under specific conditions.(a) The standard electrode potential, $E^{\circ}$, of $\text{Au}^{3+}(...

2020 Spring

Theory

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

Compound F has been found in small quantities in some cereals and dried fruit.(a) (i) Give the name of the functional groups labelled A and B.A .........

2020 Spring

Theory

CH7 - EQUILIBRIA

Gallic acid, $C_7H_6O_5$, is a naturally occurring aromatic molecule. [Image_1: Structure of gallic acid] (a) Gallic acid contains the carboxylic ...

2020 Spring

Theory

CH19 - CARBOXYLIC ACIDS AND DERIVATIVES

Valinol can be synthesised by the following reactions. Reaction 1 uses valine as the starting material. (a) (i) Write an equation for reaction 1, u...

2020 Spring

MCQ

CH7 - EQUILIBRIA

Ethene can be oxidised to form epoxyethane, $C_2H_4O$.$$C_2H_4(g) + \frac{1}{2}O_2(g) \rightleftharpoons C_2H_4O(g) \quad \Delta H^\circ = -107 \text{...

2020 Summer