WAEC Chemistry questions: Metals and their compounds

23 questions with answers and explanations. Tap an option to check yourself.

1. Question 21· Metals and their compounds· WAEC

   Aluminium does not corrode easily because it

   • Ais covered by a thin protective oxide layer
   • Bis unreactive
   • Chas a low density
   • Dis a non-metal

   Show answer

   Explanation and discussion

2. Question 22· Metals and their compounds· WAEC

   The rusting of iron requires both

   • Aheat and light
   • Boxygen and nitrogen
   • Cwater and carbon dioxide
   • Dwater and oxygen

   Show answer

   Explanation and discussion

3. Question 23· Metals and their compounds· WAEC

   Copper is used for electrical wiring because it

   • Ais very hard
   • Bis a good conductor and can be drawn into wires
   • Cdoes not conduct heat
   • Dis magnetic

   Show answer

   Explanation and discussion