IB MYP Integrated Sciences e-Assessment : Combustion
Exam Style Practice Questions - New Syllabus
Question (1 mark)
Lighthouses have been used to help sailors travel safely since ancient times. For example, a lighthouse might be located on dangerous rocks, or a group of several lighthouses with different patterns of light flashes might guide ships through a narrow channel.
The first lighthouses consisted of bonfires of burning wood or coal on clifftops.
State the products of the complete combustion reaction of coal.
▶️Answer/Explanation
Ans:
Carbon dioxide ($CO_2$) and water ($H_2O$)