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

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
ants are attracted by the odour of this acid

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Chemistry
An oxidising agent is a

An electron acceptor
An electron donor
In a chemical reaction its oxidation number increases
It releases H2 in a chemical reaction

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