In 1901, which household item was invented by Hubert Cecil Booth?

1. 1. Washing Machine
   2. Refrigerator
   3. Vacuum Cleaner
   4. Microwave oven

In 1901, which piece of communication equipment was invented by Guglielmo Marconi?

1. 1. Radio
   2. Television
   3. Fax
   4. Telephone

A common atmosphere gaseous pollutant ahs been found to be very useful when produced in body cell. the finding which could held treat heart diseases and has already led to the development of the wounder drug Viagra, won the scientists working on it the Nobel Prize in Medicine in 1998. What is the gas?

1. 1. Carbon monoxide
   2. Nitrous Oxide
   3. Nitric Oxide
   4. Sulphur dioxide

Who isolated the green mould that later led to the discovery of penicillin?

1. 1. Howard Florey
   2. Ernst Boris Chain
   3. Alexander Fleming
   4. Pierre Curie

Which American inventor held a world record of 1,093 patents, l and is considered the most famous inventor in American history?

1. 1. Thomas Alva Edison
   2. Josephe Lister
   3. Louis Pasteur
   4. William Bragg

Who built the first steam railway locomotive?

1. 1. Richard Trevithick
   2. James Watt
   3. Thomas Newcomen
   4. Robert Fulton

Who discovered radium?

1. 1. Marie Curie
   2. Henry Cavendish
   3. Carl Wilhelm Scheele
   4. Henri Becquerel

Which one of the following is an alloy (mixture) and not a metal?

1. 1. Steel
   2. Iron
   3. Magnesium
   4. Potassium

Which is the most abundant gas in the Earth’s atmosphere?

1. 1. Nitrogen
   2. Oxygen
   3. Carbon dioxide
   4. Methane

Who invented the cotton gin?

1. 1. Eli Whitney
   2. Samuel Crompton
   3. Edmund Cartwright
   4. Richard Arkwright