Chemistry
The advantage of detergents over soaps is

Soaps give lather with only soft water
Detergents could not give much lather
Detergents are soluble in water
Detergents give lather even with hard water

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Chemistry
The Latin word formica means ant. The name formic acid is derived from this Latin word because

ants are attracted by the odour of this acid
this acid was first obtained by the distillation of ants
this corrosive acid is secreted by ants to drive away their enemies
this acid, in ancient times, was used to eliminate ant-hills

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