General Knowledge
| Description: GK L | |
| Number of Questions: 25 | |
| Created by: Ankita Patil | |
| Tags: GK General Knowledge: National and International Inventions & Discoveries Congruent Triangles Basic Numeracy Plane Geometry Arithmetic Logical Games Area |
Helicopter was invented in the year
Gramophone was invented in the year
Loudspeaker was invented in the year
Machine gun was invented in the year
Safety pin was invented in the year
Photography (on film) was invented in the year
Printing press was invented in the year
Refrigerator was invented in the year
Hip (turbine) was invented in the year
Sewing machine was invented in the year
Ship (steam) was invented in the year
Steam engine (condenser) was invented in the year
Skyscraper was invented in the year
Slide rule was invented in the year
Steel (stainless) was invented in the year
Steel production was invented in the year
Locomotive was invented in the year
Jet engine was invented in the year
Elevator (Mechanical) was invented in the year
Laser was invented in the year
Razor (safety) was invented in the year
Microscope was invented in the year
Microphone was invented in the year
Parachute was invented in the year
Motorcycle was invented in the year