Water-tube boiler is the one, in which _____________________?

1.	Water-tube boiler is the one, in which _____________________?
A.	Water passes through tubes and flue gases around it
B.	Tube carrying hot flue gases are immersed in a pool of water
C.	Tubes are placed in vertical position
D.	None of these
Answer» B. Tube carrying hot flue gases are immersed in a pool of water

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Water-tube boiler is the one, in which _____________________?

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