Question

Second and third most abundant metal in earth's crust:

• A. Aluminium, Calcium
• B. Iron, Silver
• C. Iron, Calcium
• D. None

Answer 1

The correct option is C

Iron, Calcium

The explanation for the correct option:

Option C

• The most abundant element in the earth's crust is aluminium which is about 8.1%.
• The second most abundant element is iron which is about 5.0%.
• The third most abundant element is calcium which is about 3.6%.

The explanation for the incorrect options:

Option A

• The most abundant element in the earth's crust is aluminium which is about 8.1%.
• The third most abundant element is calcium which is about 3.6%.

Option B

• The second most abundant element is iron which is about 5.0%.
• Iron is the second most abundant metal in the earth’s crust.
• It is also the most widely used metal.

Therefore, option C is correct.