Question

Many smoke detectors contain:

A. Carbon-14
B. Americium-241
C. Strontium-90
D. Iodine

Answer 1

Option B, Americium-241, is the right answer.

Explanation:

• A device which senses smoke usually as an indicator of fire is known as a smoke detector.
• The two most common types of smoke detectors are the Ionization chamber and photoelectric smoke indicators.
• Many of these smoke detectors comprise some amount of americium-241, which is a radioactive substance.
• These smoke detectors respond immediately to fires that give off some smoke.