1. What is the SI unit of time?
Ans: Second
2. Which was the fuel used in the first atomic bomb?
Ans: Uranium 235
3. Which is the electrolyte used for Nickel paint?
Ans: Nickel Ammonium Sulphite
4. Where is the biggest solar plant in the world?
Ans: California (America)
5. Which is the medium in which refraction of lights is the maximum?
Ans: Diamond
6. What is the name of the cells that change sun Ans: Photo Voltaic Cells
7. Who invented bifocal lens?
Ans: Benjamin Franklin
8. Name the electron that has positive charge.
Ans: Anode
9. Which scientists discovered radio activity?
Ans: Henry Beckeral
10. Name the Dutch scientists who discovered the super conductivity of the metals.
Ans: Hike Kamarling Nice
11. What is the branch of science that studies clock and time called?
Ans: Horology
12. Which German scientists is the author of the book “The philosophy of Physics”?
Ans: Marx Plank
13. Name the scientist who is known as the father of Electricity?
Ans: Michael Faraday
14. What is the mineral that is also known as Fools Hold?
Ans: Iron Sulphide
15. What is the percentage of Carbon Dioxide in the Air?
Ans: 0.03%
