Question

in your kitchen a pair of tongs is a following type of simple machine

Answer 1

 it is type of lever.

Answer 2

Simple Machines are the devices which make our work easier and faster .

Example :
Pair of Tongs, pulleys, Pair of scissors etc.

A Pair of tongs are lever with type 3 simple machine :

These levers have the effort between the load and the fulcrum.
The load is smaller than the effort but moves farther.