Disadvantages of Hard Water
Trending Questions
Q. Explain the formation of scum when hard water is treated with soap.
Q.
Would you be able to check if water is hard by using a detergent?
Q.
Soap does not form lather with hard water:-
Scum formed by lathering soap
Q.
What advantages does synthetic detergent have over soaps?
Q.
Is soap a salt?
Q.
__
The ..............group in a soap molecule is hydrophilic.
Q.
Give one word for the following:
Water that forms lather with soap is called .
Q. The cleaning action of soap is due to the formation of ___ in water.
Q.
Give a reason why detergents have a better cleansing action than soaps?
Q. Which of the following is/are true?
- Soaps are more effective in hard water than Detergents
- Detergents are more effective in hard water than Soaps.
- Both are equally effective
- None of these
Q.
Detergents give scum with hard water.
True
False
Q.
Which of the following is/are true?
Soaps are more effective in hard water than detergents
Detergents are more effective in hard water than soaps.
Both are equally effective
Detergents work only in soft water.
Q. Which of the following correctly lists the raw materials needed to make glass?
(a) sand, sodium bicarbonate, limestone
(b) silicon, sodium bicarbonate, limestone
(c) silicon, sodium carbonate, calcium carbonate
(d) sand, sodium carbonate, calcium carbonate
(a) sand, sodium bicarbonate, limestone
(b) silicon, sodium bicarbonate, limestone
(c) silicon, sodium carbonate, calcium carbonate
(d) sand, sodium carbonate, calcium carbonate
