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प्रश्न
Soap is a salt of ______ and sodium hydroxide.
विकल्प
white cement
soap
detergent
wearing of bones
tooth decay
hard
soft
Portland
fatty acid
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उत्तर
Soap is a salt of fatty acid and sodium hydroxide.
संबंधित प्रश्न
Would you be able to check if water is hard by using a detergent?
People use a variety of methods to wash clothes. Usually after adding the soap, they ‘beat’ the clothes on a stone, or beat it with a paddle, scrub with a brush or the mixture is agitated in a washing machine. Why is agitation necessary to get clean clothes?
While studying the saponification reaction, what do you observe when you mix an equal amount of colourless vegetable oil and 20% aqueous solution of NaOH in a beaker?
(A) The colour of the mixture has become dark brown
(B) A brisk effervescence is taking place in the beaker
(C) The outer surface of the beaker has become hot
(D) The outer surface of the beaker has become cold
What is a soap? Name one soap.
Explain the cleansing action of soap. Draw diagrams to illustrate your answer.
A student is testing water to know which is best for cleansing purposes with soaps. He would find that the cleansing action of soaps is best when he uses water obtained from
(a) rain
(b) tap
(c) hand pump
(d) pond
Water, coconut oil, and _______ are necessary for soap preparation.
Match the following
| 1. | Soap | C6H5 OH |
| 2. | Cement | CaSO4.2H2O |
| 3. | Fertilizers | NaOH |
| 4. | Gypsum | RCC |
| 5. | Phenol | NPK |
TFM in soaps represents ______ content in soap.
In the soap micelles
