Q1: The latest PC keyboards use a circuit that senses the movement by the change in its capacitance. What are these keyboards called?

ANS:A - Capacitance keyboards

A Capacitance keyboard is a type of computer keyboard that uses a change of capacitance on the capacitor pad to detect a pressed key on a keyboard. It provides functionality similar to a standard contact keyboard, but its internal structure is different and is fairly quicker and more reliable.