Advertisements
Advertisements
Question
Why does the hardness of water render it unfit for use in a boiler.
Advertisements
Solution
Steam is usually made in boilers which are made of a number of narrow copper tubes surrounded by fire. As the cold water enters these tubes, it is immediately changed into steam, while the dissolved solids incapable of changing into vapour deposit on the inner walls of the tubes. This goes on and makes the bore of the tubes narrower. The result is that less water flows through the tubes at one time and less steam is produced. When the bore of the tube becomes very narrow, the pressure of the steam increases so much that at times the boiler bursts.
APPEARS IN
RELATED QUESTIONS
Give reason for Table salt becomes moist during rainy season.
Discuss the importance of water as a solvent for our body .
What is the importance of dissolved salts in water?
Explain why boiled or distilled water tastes flat.
Explain why:
Lakes and rivers do not suddenly freeze in the winters.
What is the advantage of a detergent over soap?
Why does the hardness of water render it unfit for use in a washing purposes.
Select the correct answer of the following statement:
The medium of dissolution which allows the solute to dissolve in it.
What insoluble substance? Give examples.
Take two pots with similar plants. Water one of the plants with tap water and the other with seawater. Record your findings and note the difference observed.
