MCQ

CH2 - SEPARATING SUBSTANCES

A student takes 2 g samples of calcium carbonate and adds them to 20 cm^3 samples of dilute hydrochloric acid at different temperatures. She measures ...

2009 Summer

1

MCQ

CH2 - SEPARATING SUBSTANCES

Which method would be most suitable for the separation of a mixture of sand and water to obtain the sand?

2012 Summer

3

MCQ

CH2 - SEPARATING SUBSTANCES

The diagram shows the paper chromatograms of four substances, W, X, Y and Z.Which two substances are pure?

2009 Summer

5

MCQ

CH2 - SEPARATING SUBSTANCES

Which two methods can be used to separate a salt from its solution in water? 1 crystallisation 2 decanting 3 distillation 4 filtration

2014 Summer

3

MCQ

CH2 - SEPARATING SUBSTANCES

Methanol, CH$_3$OH, and ethanol, C$_2$H$_5$OH, are miscible liquids. Which diagram shows apparatus that is used to obtain methanol from a mixture of ...

2013 Summer

2

MCQ

CH2 - SEPARATING SUBSTANCES

An aqueous solution is coloured.Which method of separation would show that the solution contains ions of different colours?

2011 Summer

2

MCQ

CH2 - SEPARATING SUBSTANCES

The table gives the solubility of four substances in ethanol and in water.A mixture containing all four substances is added to ethanol, stirred and fi...

2011 Summer

1

MCQ

CH2 - SEPARATING SUBSTANCES

A fruit drink coloured orange contains a dissolved mixture of red and yellow colouring agents. One of these colouring agents is suspected of being ill...

2010 Summer

3

MCQ

CH2 - SEPARATING SUBSTANCES

Ethanol is made by fermentation.How is ethanol obtained from the fermentation mixture?

2014 Winter

2

MCQ

CH2 - SEPARATING SUBSTANCES

Part of the instructions in an experiment reads as follows. Quickly add 50 cm$^3$ of acid. What is the best piece of apparatus to use?

2012 Winter

4

MCQ

CH1 - STATES OF MATTER

The changes that occur when a substance changes state are shown below.$$ \text{solid} \underset{Z}{\overset{W}{\leftrightarrows}} \text{liquid} \under...

2015 Summer

1

MCQ

CH1 - STATES OF MATTER

A student uses the apparatus shown in the diagram below to measure the volume of carbon dioxide gas made when different masses of marble chips are add...

2015 Summer

1

MCQ

CH3 - ATOMS AND ELEMENTS

Atoms contain electrons, neutrons and protons.What is the definition of nucleon number?

2015 Summer

1

MCQ

CH3 - ATOMS AND ELEMENTS

The diagram shows the atomic structure of an element X.What is X?

2015 Summer

2

MCQ

CH3 - ATOMS AND ELEMENTS

Which statements comparing the properties of electrons, neutrons and protons are correct? [Table_1: Neutrons and protons are both heavier than electr...

2015 Summer

2

MCQ

CH4 - ATOMS COMBINING

Rescuers are drilling through fallen rock in order to rescue some men trapped in a cave. The drill needs lubricating from time to time. The following...

2015 Summer

1

MCQ

CH4 - ATOMS COMBINING

In which compounds are pairs of electrons shared between atoms?1. methane2. lead bromide3. sodium chloride

2015 Summer

3

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

What is the relative formula mass, $M_r$, of CaCO$_3$?

2015 Summer

2

MCQ

CH1 - STATES OF MATTER

Copper and hydrogen can each be formed by electrolysis. At which electrodes are these elements formed? [Table_1]

2015 Summer

1

MCQ

CH1 - STATES OF MATTER

The diagram shows a failed attempt to copper-plate a pan.Which action will plate the pan with copper?

2015 Summer

2