The Total solution for NCERT class 6-12
If water contains dissolved calcium hydrogen carbonate,out of soaps and synthetic detergents which one will you use for cleaningclothes?
Answer - 31 : -
Synthetic detergents are preferred for cleaning clothes.When soaps are dissolved in water containing calcium ions, these ions forminsoluble salts that are of no further use.
However, when synthetic detergents are dissolved in watercontaining calcium ions, these ions form soluble salts that act as cleansingagents.
Label the hydrophilic and hydrophobic parts in thefollowing compounds.
Answer - 32 : - (i)