Question: Except for dry wood, which combination of the three substances—alcohol, potassium permanganate, and sugar—would most likely result in the ignition phenomenon shown in the image?
A. Alcohol + Sugar
B. Potassium permanganate + Alcohol
C. Potassium permanganate + Sugar
D. Only sugar or only alcohol
Clues:
1. A vertical stick is in contact with a horizontal log.
2. There is fire, smoke, and sparks at the point of contact between the stick and the log.
3. The wood around the point of contact is blackened and charred.
4. The arrangement of the stick and log resembles a friction fire starter, such as a hand drill or bow drill, where a spindle is rotated on a fireboard.
5. The scene is dark, highlighting the fire as the main source of light.
Answer: C
Category: Chemistry