Question 440Steam Plants - Assistant Engineer

The correct answer is A) Firebrick. Firebrick is a type of refractory material that is capable of providing structural stability due to its high heat resistance and mechanical strength. Refractory materials are used in applications where high temperatures are encountered, such as furnaces, boilers, and fireplaces. Firebrick is specifically designed to withstand high temperatures and maintain its structural integrity, making it a suitable choice for providing structural stability. The other options, such as insulating brick, chrome castable, and insulating block, are not primarily designed for structural stability. They may have better insulating properties or specific chemical compositions, but they do not possess the same level of mechanical strength and heat resistance as firebrick.