Q.1.
One reason for researching new methods to extract copper from low grade ores is...
Q.2.
Why is aluminium extracted using electrolysis?
Q.3.
Which of the following shows a balanced chemical equation for the reduction of iron ore in the blast furnace?
Q.4.
Metals can be extracted from low grade ores using plants. This process is called...
Q.5.
Choose the correct order of reactivity for the five metals.
Q.6.
Ores are the starting point for extracting metals because...
Q.7.
Which of these metals is found as itself rather than in a compound?
Q.8.
If aluminium cans are not recycled, they can affect the environment by...
Q.9.
Which of the following is a disadvantage of extracting copper by bioleaching?
Q.10.
Copper can be obtained from its ore by displacement using scrap iron because...