Question

A number of elements are available in earth’s crust but most abundant elements are_________.

• A. $Al$ and $Fe$
• B. $Al$ and $Cu$
• C. $Fe$ and $Cu$
• D. $Cu$ and $Ag$

Answer 1

Answer: (A)

Among a number of elements which are available in earth crust, the most abundant elements are aluminium and iron. Aluminium is third most abundant element in earth crust. i.e., $8.3\%$ by weight while iron present in earth crust with $4.2\%$ by weight. Copper and silver are also found in earth crust but their abundance percentage is low.