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Introducing new Paper mode
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10 questions
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- Multiple ChoicePlease save your changes before editing any questions.
Which of the following metals reacts with water?
Magnesium
Iron
Silver
potassium
- Multiple ChoicePlease save your changes before editing any questions.
Which method of extraction is used to extract potassium from its ore?
Heat alone
Heating with carbon
Electrolysis
Using a magnet
- Multiple ChoicePlease save your changes before editing any questions.
What is a metal ore?
Naturally occurring metal compound in rocks
A pure element found in rocks
- Multiple ChoicePlease save your changes before editing any questions.
The energy in an electrochemical cell comes from
The wires
The electrolyte
Chemical reactions
- Multiple ChoicePlease save your changes before editing any questions.
An electrolyte is a conductive solution?
True
False
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following metals can be extracted from its ore by heat alone?
Iron
silver
Calcium
Soodium
- Multiple ChoicePlease save your changes before editing any questions.
Whioch of the following pairs of metals will give the LARGEST voltage?
Iron and Zinc
Potassium and Sodium
Magnesium and silver
Sodium and Lithium
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following could be used as the electrolyte solution in an electrochemical cell?
Hydrochloric acid
Sodium
Magnesium
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following metals is found in its pure form?
Aluminium
Calcium
Gold
Iron
- Multiple ChoicePlease save your changes before editing any questions.
What would happen to a silver ring if it was dropped into some acid?
It will react
Nothing will happen
It will catch fire