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

CH2 - ATOMIC STRUCTURE

Fig. 1.1 shows how first ionisation energies vary across Period 2.(a) Construct an equation to represent the first ionisation energy of oxygen. Includ...

2022 Spring

Theory

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

Some oxides of elements in Period 3 are shown.$\text{Na}_2\text{O}$\hspace{1cm}$\text{Al}_2\text{O}_3$\hspace{1cm}$\text{P}_4\text{O}_6$\hspace{1cm}$\...

2022 Spring

Theory

CH11 - GROUP 17

The hydrogen halides HCl, HBr and HI are all colourless gases at room temperature.(a) The hydrogen halides can be formed by reacting the halogens with...

2022 Spring

Theory

CH18 - CARBONYL COMPOUNDS

Compounds J and K are found in plant oils.[Image_1: Illustration of compounds J and K]Fig. 4.1(a) (i) Complete Table 4.1 to state what you would obser...

2022 Spring

Theory

CH7 - EQUILIBRIA

Iodine is found naturally in compounds in many different oxidation states.(a) Iodide ions, $\text{I}^-$, react with acidified $\text{H}_2\text{O}_2$(a...

2022 Spring

Theory

CH5 - CHEMICAL ENERGETICS

Silicon is the second most abundant element by mass in the Earth's crust.(a) In industry, silicon is extracted from SiO$_2$ by reaction with carbon at...

2022 Spring

Theory

CH12 - AN INTRODUCTION TO THE CHEMISTRY OF TRANSITION ELEMENTS

Titanium is a transition element in Period 4. It is commonly found as TiO2 in minerals.(a) (i) Define transition element.................................

2022 Spring

Theory

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

Compounds F and J are shown in Fig. 4.1.Fig. 4.1(a) F and J both contain the arene functional group.(i) Identify...

2022 Spring

Theory

CH19 - CARBOXYLIC ACIDS AND DERIVATIVES

2-Chloropropanoic acid, CH₃CHClCOOH, is used in many chemical syntheses.(a) (i) An equilibrium is set up when CH₃CHClCOOH is added to water. Write...

2022 Spring

Theory

CH19 - CARBOXYLIC ACIDS AND DERIVATIVES

Lidocaine is used as an anaesthetic. A synthesis of lidocaine is shown in Fig. 6.1.(a) W can be formed by reacting HOCH$_2$COOH with an excess of SOCl...

2022 Spring