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Q 1/39
Score 0
The diagram shows the paper chromatograms of four substances, W, X, Y and Z. Which two substances are pure?
60
X and Z
W and X
W and Y
X and Y
Q 2/39
Score 0
A fruit drink coloured orange contains a dissolved mixture of red and yellow colouring agents.
One of these colouring agents is suspected of being illegal.
Which method could be used to show the presence of this illegal colouring agent?
45
filteration
distillation
evaporation
chromatography
39 questions
Q.
The diagram shows the paper chromatograms of four substances, W, X, Y and Z. Which two substances are pure?
1
60 sec
Q.
A fruit drink coloured orange contains a dissolved mixture of red and yellow colouring agents.
One of these colouring agents is suspected of being illegal.
Which method could be used to show the presence of this illegal colouring agent?
2
45 sec
Q.
A student is investigating a coloured mixture using chromatography. Where should he place the coloured mixture?
3
45 sec
Q.
In the chromatography experiment shown, which label represents the solvent front?
4
45 sec
Q.
A sample of liquid X turns blue cobalt(II) chloride paper pink. The sample boils at 102°C.
Which statements are correct?
1) X contains water.
2 ) X is impure water.
3 ) X freezes above 0 °C.
5
45 sec
Q.
A student carried out paper chromatography on a mixture of amino acids.
The student sprayed the dried chromatogram with a locating agent.
What is the function of the locating agent?
6
45 sec
Q.
Impurities change the melting and boiling points of substances.
Sodium chloride is added to a sample of pure water.
How does the addition of sodium chloride affect the melting point and boiling point of the water?
7
60 sec
Q.
Propanone, is a liquid at room temperature.
What is the boiling point of pure propanone?
8
60 sec
Q.
A student carries out an experiment to prepare pure magnesium sulfate crystals.
The diagram shows the first stage of the preparation. He adds magnesium carbonate until no more reacts.
Which process should he use for the next stage?
9
45 sec
Q.
A student separates salt from a mixture of salt and sand.
What is the correct order of steps for the student to take?
10
60 sec
Q.
Alcohol and water are completely miscible. This means when mixed together they form only one
liquid layer.
Which method is used to separate alcohol from water?
11
45 sec
Q.
The diagram shows how muddy water can be purified. Which process for purifying the muddy water is shown?
12
45 sec
Q.
Which compound is not used as a fertiliser?
13
45 sec
Q.
Lime (calcium oxide) is used to treat waste water from a factory.
Which substance is removed by the lime?
14
45 sec
Q.
Iron from a blast furnace is treated with oxygen and with calcium oxide to make steel.
Which substances in the iron are removed?
15
60 sec
Q.
Copper is sometimes used to make cooking utensils.
Three properties of copper are given.
1) corrosion resistant
2) good conductor of electricity
3) good conductor of heat
Which properties make copper a suitable metal for making cooking utensils?
16
45 sec
Q.
Which property is not considered a typical metallic property?
17
45 sec
Q.
The diagram shows an electrical cable.
Which statement about the substances used is correct?
18
45 sec
Q.
What is always true for a pure substance?
19
45 sec
Q.
Aluminium is an important metal with many uses.
Some of its properties are listed.
1) It is a good conductor of heat.
2) It has a low density.
3) It has an oxide layer that prevents corrosion.
Which set of properties help to explain the use of aluminium for cooking and storing food?
20
45 sec
Q.
Greenhouse gases may contribute to climate change.
Two of these gases are emitted into the atmosphere as a result of processes within animals.
Gas …..1….. is produced by process …..3….. .
Gas …..2….. is produced by process …..4….. .
Which row correctly complete gaps 1, 2, 3 and 4?
21
60 sec
Q.
To grow rose plants, a fertiliser containing nitrogen, phosphorus and potassium is often used.
For the best rose flowers, the fertiliser should contain a high proportion of potassium.
Which fertiliser is best for producing rose flowers?
22
60 sec
Q.
The diagram shows the properties of four substances.
Which one could be magnesium?
23
45 sec
Q.
Which process takes place in the conversion of iron into steel?
24
60 sec
Q.
When limestone is heated very strongly in air, lime is made.
What is the formula of limestone and of lime?
25
45 sec
Q.
When calcium carbonate is heated, compound X and a gas are formed.
What is the name of X and what is its use?
26
45 sec
Q.
Chromatography and fractional distillation can be used to separate compounds.
In which type of separation is a thermometer needed for checking that complete separation has
occurred?
27
45 sec
Q.
The diagram shows a blast furnace used to extract iron from iron ore.
Why is limestone added to the furnace?
28
45 sec
Q.
The diagrams show four sacks which a farmer has in his barn.
Which sacks should be mixed to make a complete fertiliser, containing all the essential elements needed by plants?
29
45 sec
Q.
An experiment is carried out to separate a mixture of two dyes. A line is drawn on a piece of chromatography paper and a spot of the dye mixture placed on it. The paper is dipped into a solvent and left for several minutes. Which statement about this experiment is correct?
30
45 sec
Q.
Which reaction is not a step in the production of iron from hematite in the Blast Furnace?
31
60 sec
Q.
Stainless steel is an alloy of iron and other metals. It is strong and does not rust but it costs much
more than normal steel.
What is not made from stainless steel?
32
60 sec
Q.
An iron nail is placed in a closed test-tube, containing gas L.
The nail rusts. What is gas L?
33
45 sec
Q.
Which statements are correct?
1) Carbon monoxide is responsible for the production of ‘acid rain’.
2) Oxides of nitrogen are present in car exhausts.
3) Sulfur dioxide can be produced by the combustion of fossil fuels.
34
45 sec
Q.
Which property do all metals have?
35
45 sec
Q.
Which object is least likely to contain aluminium?
36
45 sec
Q.
Some properties of four elements are shown in the table.
Which element is a metal?
37
60 sec
Q.
The diagram shows three types of item.
Which method of rust prevention can be used for all three types of item?
38
60 sec
Q.
A salt is made by adding an excess of an insoluble metal oxide to an acid.
How can the excess metal oxide be removed?
