Which of the following statements is INCORRECT about water-tube and fire-tube boilers?
1
In case of water tube boilers, hot gases are surrounded over the tubes.
2
In case of water tube boilers, water flows in the tubes.
3
In case of fire-tube boilers, hot gases flow in the tubes.
4
In case of water tube boilers, hot gases flow in the tubes.
5
Question Not Attempted