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प्रश्न
What is soap? For what is it used?
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उत्तर
Soap is chemically a sodium salt of stearic acid (an organic acid with the formula C17H35COOH) and has the formula C17H35COONa.
Soap is used for washing purposes.
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संबंधित प्रश्न
Discuss the importance of water as a solvent for our body .
'Water is the universal solvent'. Comment.
In which of the following substances will there be
No change in mass when they are exposed to air?
Sodium chloride
Iron
Conc. sulphuric acid
Table salt
Sodium carbonate crystals
Name the gas that:
Does not affect acidified K2Cr2O7 paper but turns lime water milky.
Give a reason why boiled water tastes flat.
Select the correct answer of the following statement:
The medium of dissolution which allows the solute to dissolve in it.
Give a reason for the following.
Water is a universal solvent.
What insoluble substance? Give examples.
Take two pots with similar plants. Water one of the plants with tap water and the other with seawater. Record your findings and note the difference observed.
State whether the following statement is true or false.
Water can be separated from salt by evaporation.
