Advertisements
Advertisements
Question
What do you understand by soft water?
Advertisements
Solution
Soft water is water that has a relatively low concentration of calcium carbonate and other ions. The water that lathers with soap easily is called soft water. It describes the type of water that contains few or no minerals like calcium (Ca) or magnesium (Mg) ions.
APPEARS IN
RELATED QUESTIONS
Give balanced chemical equation for the reaction of water with Sodium oxide.
What causes the violence associated with torrential rain?
Identify A, B, C and D; first one is done for you.

Why is it said that water is life?
Fill in the blank:
The type of water softened by addition of washing soda is ______.
A jumbled word is given here. Write the correct form of the word.
WOSN
Animal waste, oil and urea are some of the organic impurities present in sewage. Name two more organic impurities present in sewage.
Match the items of Column I with the items of Column II with reference to sewage.
| Column I | Column II | ||
| (a) | Inorganic impurities | (i) | phosphorus and nitrogen |
| (b) | Organic impurities | (ii) | nitrates and phosphates |
| (c) | Nutrients | (iii) | cholera and typhoid |
| (d) | Bacteria | (iv) | pesticides and herbicides |
In which of the following activities will you use minimum amount of water?
Write any two activities which require more than a bucket of water.
