Simple vertical and fire-tube boilers: identify the correct statement Evaluate each claim about space requirement, achievable steam pressure/quantity, and tube count in a simple vertical boiler. Choose the correct option.

Difficulty: Medium

• A fire-tube boiler occupies less space than a water-tube boiler, for a given power.
• Steam at high pressure and in large quantities can be produced with a simple vertical boiler.
• A simple vertical boiler has one fire tube.
• All of the above