Which of the following is an important precaution to take regarding exits in a chemistry laboratory?

• A. Store chemical waste containers near exits for easy removal.
• B. Ensure exits are unobstructed and clearly marked at all times.
• C. Lock all exits during experiments to prevent unauthorized entry.
• D. Use exits as storage areas for extra lab equipment.

Answer: (B)

Verified step by step guidance

1. Understand the importance of safety in a chemistry laboratory, especially regarding emergency exits.
2. Recognize that exits must be kept clear and accessible at all times to allow quick evacuation in case of an emergency.
3. Evaluate each option: storing chemical waste near exits can block the path and create hazards; locking exits can prevent escape during emergencies; using exits as storage areas can obstruct the way.
4. Identify that the best safety practice is to ensure exits are unobstructed and clearly marked, facilitating safe and efficient evacuation.
5. Conclude that maintaining clear and well-marked exits is a critical precaution in laboratory safety protocols.