Containers of concentrated sulfuric acid and sodium hydroxide pellets typically carry warning signs to alert users to potential hazards. For concentrated sulfuric acid, warning signs may include phrases such as “Corrosive” or “Causes severe burns” due to its highly corrosive nature. Sodium hydroxide pellets may display warnings like “Causes burns” or “Harmful if swallowed,” emphasizing the corrosive and alkaline properties. Specific hazard symbols, such as the corrosive symbol, may also be present. Users should be vigilant for these warnings, indicating the substances’ potential dangers, and adhere to safety protocols, including wearing protective gear and handling with caution.