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प्रश्न
Soap is a salt of ______ and sodium hydroxide.
पर्याय
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?
Which of the following sets of materials can be used for conducting a saponification reaction for the preparation of soap?
(a) Ca(OH)2 and neem oil
(b) NaOH and neem oil
(c) NaOH and mineral oil
(d) Ca(OH)2 and mineral oil
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?
What change will you observe if you test soap with litmus paper (red and blue)?
Mention the essential material (chemicals) to prepare soap in the laboratory. Describe in brief the test of determining the nature (acidic/alkaline) of the reaction mixture of saponification reaction.
______ is better than soap for washing clothes when the water is hard.
Give reasons for the following observation:
Use of synthetic detergents causes pollution of water.
How is soap made? Write a word equation involved in soap making.
What are the two different types of molecules found in the soap?
What are soaps?
