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प्रश्न
Soaps were originally made from ______.
विकल्प
proteins
animal fats and vegetable oils
chemicals extracted from the soil
foam booster
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उत्तर
Soaps were originally made from animal fats and vegetable oils.
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संबंधित प्रश्न
Describe in brief the cleansing action of soap.
What change will you observe if you test soap with litmus paper (red and blue)?
What change will you observe if you test soap solution with a litmus paper (red and blue)? Give reason for your observation.
What is a detergent? Name one detergent.
In a soap micelle, the soap molecules are arranged radially with:
(a) ionic ends directed towards the centre and hydrocarbon ends directed outwards
(b) hydrocarbon ends directed towards the centre and ionic ends directed outwards
(c) both ionic ends and hydrocarbon ends directed toward the centre
(d) both hydrocarbon ends and ionic ends directed outwards
Which one of the following sets of materials can be used to prepare soap?
(A) Neem oil and calcium hydroxide
(B) Castor oil and sodium hydroxide
(C) Mineral oil and sodium hydroxide
(D) Neem oil and magnesium hydroxide
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 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?
TFM in soaps represents ______ content in soap.
______ are substances which can undergo chemical changes to produce certain materials.
