WHMIS 2015 Workplace Safety · Question
What characterizes a 'Pyrophoric' hazard under the Physical Hazard classes?
Pyrophoric solids or liquids are substances that can ignite spontaneously in air within five minutes of coming into contact with it. They fall under the Flame p
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Question: What characterizes a 'Pyrophoric' hazard under the Physical Hazard classes?
Answer options:
- Substances that explode when dropped ✅ Substances that catch fire spontaneously within five minutes of contact with air
- Substances that produce oxygen to support combustion
- Substances that are stable at room temperature but flammable when heated
Correct answer: Substances that catch fire spontaneously within five minutes of contact with air
Explanation: Pyrophoric solids or liquids are substances that can ignite spontaneously in air within five minutes of coming into contact with it. They fall under the Flame pictogram.
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