Answer:
1.A caution sign indicates a potentially hazardous situation that must be avoided. Failure to do so may result in minor to moderate injury. An ANSI caution sign has the word "CAUTION" written in black block letters on a yellow background, preceded by the universal caution symbol.
2.Hazard symbols or warning symbols are recognisable symbols designed to warn about hazardous or dangerous materials, locations, or objects, including electric currents, poisons, and radioactivity.
3.A warning sign is a type of sign which indicates a potential hazard, obstacle, or condition requiring special attention. Some are traffic signs that indicate hazards on roads that may not be readily apparent to a driver
4.Some lasers emit radiation in the form of light. Others emit radiation that is invisible to the eye, such as ultraviolet or infrared radiation. In general, laser radiation is not in itself harmful, and behaves much like ordinary light in its interaction with the body.
5.A Warning Hot Surface Sign is a warning message type of hazard sign which must be used to warn others around areas where there are any hot surfaces present and Warning Hot Surface Signs conveys the message "Warning hot surface" which means to warn of the dangers from any surfaces which are hot.
Explanation:
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