Q. Consider the following statements:

1. Aluminium is used as a substitute of steel, copper, zinc and lead in a number of industries.
2. It is used to manufacture aircraft, utensils and wires.

Which of the above is / are correct?
Answer: Both 1 and 2
Notes: Aluminium smelting is the second most important metallurgical industry in India. It is light, resistant to corrosion, a good conductor of heat, malleable and becomes strong when it is mixed with other metals. It is used to manufacture aircraft, utensils and wires. It has gained popularity as a substitute of steel, copper, zinc and lead in a number of industries.