The atmosphere exerts enormous pressure on us. But we do not feel it.

1. 1. The surface area of our head is very small
   2. Our blood exerts a pressure slightly more than that of the atmosphere
   3. We are used to it
   4. Our bones are very strong and can withstand this pressure

The electron was first identified by _____.

1. 1. James Chadwick
   2. J. Kepler
   3. J.J. Thompson
   4. D. Rutherford

Which of the following pairs is incorrect?

1. 1. Pasteur: Bacteriology
   2. Faraday: Diffusion of gasses
   3. Newton: Law of Gravitation
   4. Roentgen : X-Ray

Choose the correct combination.

1. 1. Evolution : Darwin
   2. typewriter: Remington
   3. Dynamite: Dunlop
   4. Aeroplan : Harvey

Mark the wrong combination.

1. 1. J.L Baird: Television
   2. A.G. Bell : Telephone
   3. J. Perkins : Darwin
   4. James Watt: Steam engine

Electron was first identified by _____.

1. 1. J. Kepler
   2. Daniel Rutherford
   3. J.J. Thomson
   4. James Chadwick

Who invented typewriter?

1. 1. Sholes
   2. Waterman
   3. Pascal
   4. Shockley

Who among the following invented the steam engine?

1. 1. Wright Brother
   2. James Watt
   3. Thomas Savory
   4. Marconi

Alexander Fleming discovered _____.

1. 1. Telephone
   2. Penicillin
   3. Streptomycin
   4. X-Ray

Neutron was discovered by _____.

1. 1. Chadwick
   2. Moseley
   3. Rutherford
   4. Thomson