What color is assigned to class 2 placards?

Answer: B — Red, green, white, or yellow

Class 2 placards are designated for gases, and they can be represented in several colors depending on the specific type of gas being transported. The options listed as colors for class 2 placards include red, green, white, and yellow. - Red typically indicates flammable gases. - Green is used for non-flammable, non-toxic gases. - Yellow is associated with poisonous or toxic gases. - White can represent various types of gases, often used to indicate that the gas is inert or non-reactive. In this context, the correct answer reflects the varied nature of gases classified under class 2, highlighting the need for multiple colors to represent different hazards associated with different gaseous materials. Each color conveys specific information regarding the type and nature of the hazard, which is critical for ensuring safety during transportation and handling. Understanding these classifications helps in effectively identifying the risks and taking appropriate precautions when dealing with various classes of hazardous materials.