ANSWER: True
Step-by-step explanation: Depending on the chemical nature, if the water is used to flush the eye, it can make it more caustic i.e. alkaline. As from the water molecules, the OH ions may increase the concentration of OH present in the chemical and make it more alkaline. There may be displacement reaction that may take place with the water and chemical. Therefore, it is true that certain caustic chemicals will become more caustic if water is used to flush the eye.