- 7
- 8
- 9
- 10
- b
-
Oxygen is represented by “O”.
Oxygen was discovered by Joseph Priestly in 1774.
- Heat Energy
- Electrical Signals
- Microwaves
- Optical Signals
- b
- 7
- 8
- 9
- 10
- a
-
The symbol of Nitrogen is “N”.
Nitrogen was discovered by Daniel Rutherford.
- Sand & Salt
- Quartz & Mica
- Sand & Silicate
- None of these
- c
- Lewis
- Waterman
- Sir Frank Whittle
- Gottle Dalmer
- c
-
Originally, Jet Engine was invention of Sir Frank Whittle, Hans Von Ohain and Albert Fono.
First Jet Engine was invented in 1930.
- IBM
- Apple
- a
-
Project Skybender is a solar powered drones project.
- New York
- Birmingham
- Paris
- None of these
- a
-
The Empire State Building is a steel framed building.
It consist of 102 stories.
It was completed in 1931 in New York.
- Mantle
- Core
- Crust
- None of these
- c
-
The crust layer of the land is 3-35km thick beneath the land and 1-8 km thick beneath the ocean.
- Lowest Countries
- Lower Countries
- Mouth of land
- Land of Sunset
- b
-
Netherlands is called lower countries because its elevation level is low.
Its 50% land is 3 feet above the sea level and 26% land is below sea level and 24% land is at sea level.
- Poet
- Indian
- Thinker
- None of these
- d
-
He was born in Afghanistan and died in Turkey.
Syed Jamal Ud Din Afghani was a Politician and Islamic Ideologist.