MCQ

CH3 - CHEMICAL BONDING

The antidote molecule shown can help to prevent liver damage if someone takes too many paracetamol tablets. What is the order of decreasing size of th...

2009 Winter

MCQ

CH3 - CHEMICAL BONDING

Which molecule has the largest overall dipole?

2009 Winter

MCQ

CH3 - CHEMICAL BONDING

Which physical properties are due to hydrogen bonding between water molecules? 1. Water has a higher boiling point than H$_2$S. 2. Ice floats on wat...

2009 Winter

MCQ

CH3 - CHEMICAL BONDING

Which diagrams represent part of a giant molecular structure? 1. [Image with C] 2. [Image with C] 3. [Image with Na and Cl]

2010 Summer

Theory

CH3 - CHEMICAL BONDING

Elements and compounds which have small molecules usually exist as gases or liquids.(a) Chlorine, $Cl_{2}$, is a gas at room temperature whereas bromi...

2010 Summer

Theory

CH3 - CHEMICAL BONDING

Hydrazine, N$_2$H$_4$, can be used as a rocket fuel and is stored as a liquid. It reacts exothermically with oxygen to give only gaseous products. Th...

2010 Summer

Theory

CH3 - CHEMICAL BONDING

(a) Describe how the behaviour of the oxides of tin and lead in their +4 oxidation states differ on heating..............................................

2010 Summer

MCQ

CH3 - CHEMICAL BONDING

Organic nitrates in photochemical smog can cause breathing difficulties. The diagram shows an example of an organic nitrate molecule. What is the corr...

2010 Winter

MCQ

CH3 - CHEMICAL BONDING

Which types of intermolecular forces can exist between adjacent urea molecules?

2010 Winter

MCQ

CH3 - CHEMICAL BONDING

Organic nitrates in photochemical smog can cause breathing difficulties. The diagram shows an example of an organic nitrate molecule. What is the cor...

2010 Winter

MCQ

CH4 - STATES OF MATTER

The temperature of a sample of an inert gas is increased.What effect does this have on the number of molecules with the most probable energy and on th...

2019 Summer

MCQ

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

A sample of element X is analysed using mass spectrometry. The mass spectrum obtained is shown.What is the relative atomic mass of this sample of elem...

2019 Summer

MCQ

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

A washing powder contains sodium hydrogencarbonate, NaHCO_3, as one of the ingredients.In a titration, a solution containing 1.00 g of this washing po...

2019 Summer

MCQ

CH2 - ATOMIC STRUCTURE

The outermost electron in an atom of neon occupies a particular orbital.Which row shows the relative energy and shape of this orbital?[Table_1: Energy...

2019 Summer

MCQ

CH3 - CHEMICAL BONDING

In which species is there a lone pair of electrons?

2019 Summer

MCQ

CH4 - STATES OF MATTER

When an evacuated tube of volume 400 cm$^3$ is filled with gas at 300 K and 101 kPa, the mass of the tube increases by 0.65 g.Assume the gas behaves a...

2019 Summer

MCQ

CH4 - STATES OF MATTER

Under which conditions will nitrogen behave most like an ideal gas?[Table with conditions]

2019 Summer

MCQ

CH5 - CHEMICAL ENERGETICS

Two reactions and their enthalpy changes are shown.2C(s) + 2H$_2$(g) \rightarrow C$_2$H$_4$(g) \hspace{1em} \Delta H^\circ = +52.2 \text{ kJ mol}^{-1}...

2019 Summer

MCQ

CH6 - ELECTROCHEMISTRY

Ethandioic acid, HO$_2$CCO$_2$H, can be oxidised by KMnO$_4$ in dilute sulfuric acid. The products of this reaction are carbon dioxide, water, potassi...

2019 Summer

MCQ

CH7 - EQUILIBRIA

Hydrogen iodide gas decomposes reversibly producing iodine vapour and hydrogen.$$2HI(g) \rightleftharpoons I_2(g) + H_2(g) \quad \Delta H = +12 \text{...

2019 Summer