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

1

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

2

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

In which changes do the particles move further apart? $$\text{W} \rightleftharpoons \text{Y} \text{ (gas)}$$ $$\text{X} \rightleftharpoons \text{Z} ...

2016 Summer

2

MCQ

CH2 - SEPARATING SUBSTANCES

A sample of a dye is investigated by chromatography. A line is drawn across a piece of chromatography paper and a spot of the dye is placed on it.The ...

2016 Summer

1

MCQ

CH2 - SEPARATING SUBSTANCES

One of the instructions for an experiment reads as follows. Quickly add 50 $\text{cm}^3$ of acid. What is the best piece of apparatus to use?

2016 Summer

2

MCQ

CH4 - ATOMS COMBINING

Diamond and graphite are macromolecules.Which statement about diamond and graphite is not correct?

2016 Summer

2

MCQ

CH4 - ATOMS COMBINING

The table shows the electronic structure of four atoms.[Table_1]Which two atoms combine to form a covalent compound?

2016 Summer

2

MCQ

CH3 - ATOMS AND ELEMENTS

An aluminium atom has a nucleon number of 27 and a proton number of 13.How many neutrons does this aluminium atom contain?

2016 Summer

1

MCQ

CH4 - ATOMS COMBINING

What happens when a bond is formed between a green gaseous element and a soft metallic element?

2016 Summer

1

MCQ

CH6 - USING MOLES

The equation shows the reaction between magnesium and sulfuric acid. [A_r: H, 1; O, 16; Mg, 24; S, 32] $$ \text{Mg} + \text{H}_2\text{SO}_4 \rightarr...

2016 Summer

2

MCQ

CH1 - STATES OF MATTER

The diagram shows an electrical cable.Which statement about the substances used is correct?

2016 Summer

2

MCQ

CH1 - STATES OF MATTER

When substance X is electrolysed, the amount of gases P and Q formed is shown. What is substance X?

2016 Summer

1