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In which method of determining total hardness of water is based on the premise that hardness producing substance react with soap and form insoluble compounds before lather is produced?

In which method of determining total hardness of water is based on the premise that hardness producing substance react with soap and form insoluble compounds before lather is produced? Correct Answer Clark’s method

In Clark’s method, total hardness is found by determining the standard soap solution required to obtain permanent lather with the water sample of known volume.

Related Questions

Read the given statements carefully and answer the questions. Statement: Sunil has only Rs 100. He has to buy a soap, an oil bottle, a kilo of potatoes and a chocolate. Which of the following combinations would Sunil buy? A. An oil bottle of Rs 44, chocolate of Rs 23, soap of Rs 2 and half kg of potatoes of Rs 16. B. An oil bottle of Rs 40, chocolate of Rs 20, soap of Rs 17 and a kg of potatoes for Rs 34. C. Half a kilo potato of Rs 12, soap of Rs 23, chocolate of Rs 5 and an oil bottle of Rs 39. D. Chocolate of Rs 50, soap of Rs 7, an oil bottle of Rs 30 and a kg  of potato of Rs 29 per kg.
Read the instructions below and answer the questions that follow: P * Q means “some P are Q”. P – Q means “all P are Q”. P + Q means “no P is Q”. Now, statements below are followed by two conclusions. You have to take the given statements to be true even if they seem to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts. Statements: Ant * hall Hall * soap Soap + dog Dog * doll Conclusions: I. Ant * soap II. Soap + doll
Which of the following are characteristics/properties of permanent hardness in water? (A) Presence of bicarbonates of calcium and magnesium (B) Presence of sulphates of calcium and magnesium (C) Forms good lather when comes in contact with soap (D) Presence of chloride of calcium and magnesium (E) Can be removed by boiling the water Choose the correct answer from the options given below :
Consider a set U of 23 different compounds in a Chemistry lab. There is a subset S of U of 9  compounds, each of which reacts with exactly 3 compounds of U. Consider the following statements:  I. Each compound in U\S reacts with an odd number of compounds. II. At least one compound in U\S reacts with an odd number of compounds. III. Each compound in U\S reacts with an even number of compounds. Which one of the above statements is ALWAYS TRUE?
Which of the following statement(s) is/are CORRECT? I. Carbon compounds linked by only single bond are called saturated compounds. II. Carbon compounds having double or triple bonds are called unsaturated compounds. III. Saturated carbon compounds are more reactive than unsaturated carbon compounds.
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Which of the given statements about hard water is/are correct: 1. Contains sulfates, chlorides, bicarbonates of calcium and magnesium. 2. Hard water forms lather with both soap and detergent.
The water which form lather directly with the soap is called __________
Which of the following is the use of sodium carbonate, which is an alkali?
1. Producing sodium compounds such as borax.
2. To remove permanent hardness of water.
3. Use in glass, soap and paper industries.
The premise on which your conclusion is based is not valid.Choose the meaning of premise.