Which one of the following statements is NOT correct?
1
Grate is the platform in the furnace of boiler upon which fuel is burnt and it is made of cast iron bars
2
Cochran boiler is one of the best types of horizontal multi-tubular boiler.
3
Babcock and Wilcox boiler is a water tube boiler
4
The removal of the mud and other impurities of water from the lowest part of the boiler is termed as blowing off
5
Question Not Attempted