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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
Why do soaps not form lather in hard water?
What change will you observe if you test soap solution with a litmus paper (red and blue)? Give reason for your observation.
Why have detergents replaced soap as a washing agent?
What is the advantage of detergents over soaps for washing clothes?
What is saponification? Write the chemical equation of the reaction involved in this process. Name all the substances which take part in this process and also those which are formed.
Consider the following oils :
(I) Mobil oil
(II) Castor oil
(III) Turpentine oil
(IV) Kerosene
(V) Mustard oil
(VI) Coconut oil
Which of these can be used for prepartion of soap?
(a) I, II, III, VI
(b) II, V, VI
(c) II, III, V, VI
(d) II, III, VI
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
What is the difference between the chemical composition of soaps and detergents? State in brief the action of soaps in removing an oily spot from a shirt. Why are sops not considered suitable for washing where water is hard?
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.
Analogy:
Used to join components: Adhesives:: Clean the body ______.
