Most Common method of printing is

Who was the first Chief Election Commissioner of India.

Who built the first passenger train ?

Who invented television?

Name the first Indian to became the Chief of Air staff.

Where did block printing was first invented ?

Who developed 'Rocket(an improved version of the earliar steamp engine)

A machine tool or system that someone has newly made, designed or thout of for the first time is known as____________.

Inventor of the first rocket which burnt on liquid fuel.

Gatenberg  first print _________