MCQ

CH17 - ORGANIC CHEMISTRY

The industrial fractional distillation of petroleum is shown.Which process happens at Y?

2017 Summer

2

MCQ

CH17 - ORGANIC CHEMISTRY

Which statement about homologous series is not correct?

2017 Summer

2

MCQ

CH17 - ORGANIC CHEMISTRY

The diagram shows the separation of petroleum into fractions.What could X, Y and Z represent?

2016 Summer

2

MCQ

CH17 - ORGANIC CHEMISTRY

Which compound is \textit{not} an alkane, $C_nH_{2n+2}$?

2016 Summer

1

MCQ

CH17 - ORGANIC CHEMISTRY

An ester is formed when a carboxylic acid reacts with an alcohol. Which ester is formed when propanoic acid and ethanol react?

2016 Summer

2

MCQ

CH17 - ORGANIC CHEMISTRY

Ethanol is manufactured by fermentation or by the catalytic addition of steam to ethene.What is an advantage of ethanol manufacture by fermentation in...

2017 Summer

1

MCQ

CH17 - ORGANIC CHEMISTRY

What is an advantage of producing ethanol by fermentation of sugar compared to the catalytic addition of steam to ethene?

2016 Summer

2

MCQ

CH17 - ORGANIC CHEMISTRY

The formula of an ester is $\text{CH}_3\text{CH}_2\text{CH}_2\text{COOCH}_2\text{CH}_2\text{CH}_3$.Which acid and alcohol react together to make the e...

2017 Summer

2

MCQ

CH17 - ORGANIC CHEMISTRY

The structures of four organic compounds are shown. Which compounds are unsaturated?

2017 Winter

2

MCQ

CH17 - ORGANIC CHEMISTRY

Petroleum is separated into fractions.Which statement is not correct?

2016 Winter

1

MCQ

CH1 - STATES OF MATTER

Small crystals of purple $\text{KMnO}_4$ $(M_r = 158)$ and orange $\text{K}_2\text{Cr}_2\text{O}_7$ $(M_r = 294)$ were placed at the centres of separa...

2017 Summer

3

MCQ

CH2 - SEPARATING SUBSTANCES

Pure water has a boiling point of 100 °C and a freezing point of 0 °C. What is the boiling point and freezing point of a sample of aqueous sodium c...

2017 Summer

2

MCQ

CH2 - SEPARATING SUBSTANCES

A chromatogram obtained from the chromatography of four substances is shown. Which substance has an $R_f$ value of 0.6?

2017 Summer

2

MCQ

CH3 - ATOMS AND ELEMENTS

Sodium reacts with chlorine to form sodium chloride.Which statements describe what happens to the sodium atoms in this reaction?1. Sodium atoms form p...

2017 Summer

1

MCQ

CH3 - ATOMS AND ELEMENTS

Diamond is extremely hard and does not conduct electricity.Which statement explains these properties?

2017 Summer

3

MCQ

CH4 - ATOMS COMBINING

Which statement about metals is not correct?

2017 Summer

1

MCQ

CH4 - ATOMS COMBINING

Aluminium reacts with fluorine.$xAl(s) + yF_2(g) \rightarrow zAlF_3(s)$Which values of $x$, $y$ and $z$ balance the equation?[Table_1]

2017 Summer

2

MCQ

CH4 - ATOMS COMBINING

Carbon monoxide burns in oxygen to produce carbon dioxide. $$2\text{CO}(g) + \text{O}_2(g) \rightarrow 2\text{CO}_2(g)$$ Which mass of carbon dioxide...

2017 Summer

1

MCQ

CH1 - STATES OF MATTER

Which statement about electrolysis is correct?

2017 Summer

2

MCQ

CH1 - STATES OF MATTER

The reactivity series for a number of different metals is shown.[Image_1: Reactivity series and diagram]The diagram shows different metal strips dippe...

2017 Summer

3