1. Who invented the spinning cup anemometer?
    Answer: Thomas Romney Robinson (1846).
  2. The minimum amount of energy required to remove the most loosely bonded electron is called as?     Answer: Ionisation energy.

3) Who was the first person to design models of flying machine?
Answer: Leonardo da Vinci.

4) Of the following quantities, which one has dimension different from the remaining three?
(a) Energy per unit volume (b) Force per unit area (c) Product of voltage and charge per unit volume (d) Angular momentum.
Answer: D.

5)Who tried to prove that air is weightless?
Answer: Voltaire.

6) When does the value of energy become zero for an electron?
Answer: Far away from the nucleus.

7) Who invented Aqua-Lung?
Answer: Jacques Cousteau (1943)