Acid rain contains high levels of _____.

1. 1. Oxalic acid
   2. Sulphuric and nitric acids
   3. Acetic acid
   4. Carbolic acid

In an oil lamp, the oil rises up in the wick due to _____.

1. 1. Viscosity of oil
   2. Change in temperature
   3. Capillary action
   4. Atmospheric pressure

Heating element of an electric heater is made up of _____.

1. 1. Nichrome
   2. Graphite
   3. Tungsten
   4. Chromium

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