Steam Boilers, Engines, Nozzles and Turbines
The difference between Cornish boiler and Lancashire boiler is that

Former is fire tube type and latter is water tube type boiler
Former contains one fire tube and latter contains two fire tubes
Former is water tube type and latter is fire tube type
None of the listed here

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Steam Boilers, Engines, Nozzles and Turbines
Which is not correct statement about effect of sulphur in fuel?

It erodes furnace walls
It helps in electrostatic precipitation of ash in flue gases
It has heating value
It leads to corrosion of air heaters, ducting, etc. if flue gas exit temperature is low

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