What is the percentage of water from oceans?
The hardness which can be removed by boiling is called
Water which forms scum with soap is called
During thunderstorms, water dissolves
What happens to water on cooling?
Hepatitis is caused by
Temporary hardness can be removed by adding
Water that easily gives lather with soap is called
Out of total the amount of water available for human use is
What is the percentage of atmospheric water?
Step of sewage water treatment in which some of the solids are removed as sludge is called
The second step of sewage water treatment is called
Process in which water is filtered through sand and gravel is called
Water exists in how many states?
How many basic steps are involved in sewage water treatment?
Which of the following is the most abundant salt in seawater?
Which of the following is a disease in which excess of bile from the liver enters the blood and causes yellowness of skin and eyes?
How many basic steps are involved in raw water treatment?
Natural water is
Addition of washing soda removes
Please disable the adBlock and continue. Thank you.