Difficulty: Medium
Average Score: 64%
Entry Exam
What products are formed when methane undergoes combustion?
Correct answer
B
Rationale
When methane (CH?óÔÇÜÔÇ×) undergoes combustion with oxygen (O?óÔÇÜÔÇÜ), the products formed are carbon dioxide (CO?óÔÇÜÔÇÜ) and water (H?óÔÇÜÔÇÜO). The balanced chemical equation for this reaction is: CH?óÔÇÜÔÇ× + 2O?óÔÇÜÔÇÜ ?óÔÇáÔÇÖ CO?óÔÇÜÔÇÜ + 2H?óÔÇÜÔÇÜO. Therefore, the correct answer is option B, CO?óÔÇÜÔÇÜ and H?óÔÇÜÔÇÜO. The combustion of methane is a common example of a hydrocarbon reacting with oxygen to produce carbon dioxide and water, releasing energy in the form of heat and light.