Q. Which of the following should not be a composition of boiler-feed water? (Solved)
1. Hardness should be below 0.2ppm
2. Its caustic alkalinity should lie between 0.15 to 0.45 ppm
3. Its soda alkalinity should be 0.45-1 ppm
4. Its caustic alkalinity should be 1.5-2 ppm
- d. Its caustic alkalinity should be 1.5-2 ppm