State whether the given statement is True or False. Correct the false statement.

A machine can do work by itself.

Pick the odd one out. Give a scientific reason for your answer.

Screwdriver, sewing machine, bicycle, mixer grinder.

Pick the odd one out. Give a scientific reason for your answer.

Showl, knife, human arm, crowbar

Pick the odd one out. Give a scientific reason for your answer.

Bottle opener, nutcracker, plier, wheelbarrow