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------------------------------------------------ Why should tongs that fail to consistently perform correctly be discarded?

Tongs that fail to consistently function correctly present a risk of accidents and contamination, making them a safety hazard. They should be discarded to maintain a safe working environment and ensure precise handling of materials.

Explanation:

Tongs are common tools used in a variety of settings, including laboratories, kitchens, and industrial workplaces. These instruments are designed to handle materials safely without direct contact. Should tongs fail to consistently perform as expected, they present a safety hazard. Consistent performance is crucial for precision and safety; therefore, unreliable tongs could cause accidents or contamination.

If tongs do not work correctly, they may not be able to grip items securely, which could lead to dropping hot, cold, or hazardous materials. This can cause injuries or spoil pure substances in scientific experiments. As such, discarded tongs are necessary to maintain a safe and effective working environment. Replacing faulty equipment ensures that tasks are performed accurately and eliminates unnecessary risks.