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