H endorsement: placarding, shipping papers and the segregation table.
Most Hazardous Materials questions are the same federal material in every state. 2 questions in the app are written for Texas alone, from the Texas Commercial Motor Vehicle Drivers Handbook (DL-7C).
FRSI holders may carry up to 1,000 gallons of diesel, up to 3,000 gallons of liquid fertilizer, or any quantity of solid fertilizer not mixed with organic material.
Flame near explosives, flammable cargo or a compressed-gas fuel system is the hazard. These vehicles use reflectors or DOT triangles instead.
One example, answer shown. Practicing the rest happens in the app.
Table 2 materials need placards once the aggregate gross weight, including packaging, reaches 1,001 pounds. Table 1 materials must be placarded in any amount.