Advertisements
Advertisements
प्रश्न
What are the differences between Soap and synthetic detergent?
उत्तर
| Soap | Synthetic detergent | |
| 1. | Soaps are sodium salts of fatty acids (soft soap) or potassium salts of fatty acids (hard soap). | Synthetic detergents are made up of raw materials like fats or kerosene. |
| 2. | They can be used only with soft water. | They can be used with both soft and hard water. |
संबंधित प्रश्न
List two problems that arise due to the use of detergents instead of soaps.
Explain the formation of scum when hard water is treated with soap.
State one advantage of soaps over detergent.
Explain the cleansing action of soap. Draw diagrams to illustrate your answer.
A student takes 4 mL of distilled water in each of four test tubes I, II, III and IV, and then dissolves an equal amount of four different salts namely NaCl in I, CaCl2 in II, MgCl2 in III and KCl in IV. He then adds 8 drops of the given soap solution to each test tube and shakes the contents of the test tube 10 times. In which test tubes will enough lather (foam) be formed ?
(A) I and II
(B) II and III
(C) I and IV
(D) III and IV
What are detergents chemically? List two merits and two demerits of using detergents for cleansing. State the reason for the suitability of detergents for washing, event in the case of water having calcium and magnesium ions.
What is the difference between soaps and detergents? State, in brief, the cleansing action of soaps in removing an oily spot from a fabric. Why are soaps not very effective when a fabric is washed in hard water? How is this problem resolved?
Explain why soap cannot be used in hard water.
Explain why synthetic detergents are superior to soap.
Arrange the following statements in correct sequence
- Pour that solution into an empty matchbox, soap can be obtained after drying.
- Take the necessary quantity of water in a jar.
- Then add coconut oil drop by drop and stir it well.
- Add concentrated sodium hydroxide in the jar and allow it to cool.
- Try this soap to wash your hand kerchief.
- Cover your work area with old newspaper.
