Q.1.
Why is iron rarely used as pure iron?
Q.2.
Which two of the following statements could explain why aluminum is preferred to iron for making cans for drinks?
Q.3.
Why is potassium kept stored in oil?
Q.4.
Which metal is the most appropriate to make jewelry from?
Q.5.
Which metal would be the most appropriate to make overhead power lines from?
Q.6.
Aluminum is a useful metal to use because it does not corrode easily in air. Why?
Q.7.
Why is gold used for jewelry?
Q.8.
Copper is often used for water pipes and electrical wires. Pick two properties of copper which make it useful for this purpose.
Q.9.
Why is iron better than aluminum for making bridges?
Q.10.
Why is aluminum used to make airplane bodies?