MCQ

CH18 - CARBONYL COMPOUNDS

The naturally-occurring molecule civetone is found in a gland of the African civet cat and has been used in perfumery.With which reagent will civetone...

2009 Winter

MCQ

CH18 - CARBONYL COMPOUNDS

Cyanohydrins can be made from carbonyl compounds by generating $\text{CN}^-\text{ ions}$ from HCN in the presence of a weak base.In a similar reaction...

2009 Winter

MCQ

CH18 - CARBONYL COMPOUNDS

A compound has a relative molecular mass of 88 and its molecule contains only four carbon atoms. What could this compound be?

2009 Winter

MCQ

CH18 - CARBONYL COMPOUNDS

Which reagent will give similar results with both butanone and butanal?

2010 Summer

MCQ

CH18 - CARBONYL COMPOUNDS

What is formed when propanone is refluxed with a solution of NaBH₄?

2010 Summer

MCQ

CH18 - CARBONYL COMPOUNDS

Propanoic acid occurs naturally as a result of the bacterial fermentation of milk, and is partly responsible for the flavour of Swiss cheese.![propano...

2010 Summer

MCQ

CH18 - CARBONYL COMPOUNDS

The diagram shows some laboratory apparatus. Which preparations could this apparatus be used for?1. bromoethane, from ethanol, sodium bromide and conc...

2010 Summer

MCQ

CH18 - CARBONYL COMPOUNDS

Which reagent will give similar results with both butanone and butanal?

2010 Summer

MCQ

CH18 - CARBONYL COMPOUNDS

What is formed when propanone is refluxed with a solution of NaBH$_4$?

2010 Summer

MCQ

CH18 - CARBONYL COMPOUNDS

The diagram shows some laboratory apparatus.Which preparations could this apparatus be used for?1. bromoethane, from ethanol, sodium bromide and conce...

2010 Summer

MCQ

CH8 - REACTION KINETICS

The Boltzmann distribution for a gas at constant temperature is shown below. If the temperature of the gas is reduced by 10°C the graph changes shape...

2014 Summer

MCQ

CH2 - ATOMIC STRUCTURE

Which compound has the greatest total number of lone pairs of electrons in the valence shells of all of its atoms?

2014 Summer

MCQ

CH5 - CHEMICAL ENERGETICS

A reaction pathway diagram is shown. Which enthalpy change could the diagram not apply to?

2014 Summer

MCQ

CH2 - ATOMIC STRUCTURE

Use of the Data Booklet is relevant to this question.The most common ion-molecule reaction in gas clouds of the Universe is as shown.$$\text{H}_2(g) +...

2014 Summer

MCQ

CH6 - ELECTROCHEMISTRY

The electrolysis of brine using the diaphragm cell is an important industrial process. What happens at the anode?

2014 Summer

MCQ

CH5 - CHEMICAL ENERGETICS

Hydrazine, $\text{N}_2\text{H}_4$, is used as a rocket fuel because it reacts with oxygen as shown, producing 'environmentally friendly' gases.$\text{...

2014 Summer

MCQ

CH4 - STATES OF MATTER

A 10.0 cm^3 bubble of an ideal gas is formed on the sea bed where it is at a pressure of 2020 kPa. Just below the sea surface the pressure is 101 kPa ...

2014 Summer

MCQ

CH3 - CHEMICAL BONDING

Four substances have the physical properties shown in [Table_1].Which substance is an ionic solid?

2014 Summer

MCQ

CH5 - CHEMICAL ENERGETICS

The enthalpy change of formation of $\text{Mn(NO}_3)_2(\text{s})$ is $-696\text{ kJ mol}^{-1}$.The enthalpy change of formation of $\text{MnO}_2(\text...

2014 Summer

MCQ

CH3 - CHEMICAL BONDING

X is an element in Period 2. In which fluoride is the F−X−F angle the largest?

2014 Summer