Who invented the hydrogen bomb?

1. 1. J. Robert Oppenheimer
   2. Albert Einstein
   3. Samuel Cohen
   4. Edward Teller

Fluorine deficiency in human beings leads to _____.

1. 1. Dental caries
   2. Fluorosis
   3. Fibrosis
   4. Follicular necrosis

The wonder drug Penicillin was discovered by _____.

1. 1. Louis Pasteur
   2. Alexander Fleming
   3. Edward Jenner
   4. Jonas Salk

Electron was discovered by _____.

1. 1. Ernest Rutherford
   2. Max Planck
   3. Joseph Thomson
   4. Albert Einstein

Who discovered the neutron?

1. 1. John Bardeen
   2. William Brag
   3. Henry Cavendish
   4. James Chadwick

Who invented the Cellophane?

1. 1. Le de Forest
   2. Alan. M. Turning
   3. F. Lanchestre
   4. J. Bradenberger

The theory of mutations was given by _____.

1. 1. Darwin and Lamarck
   2. Hugo de Vires
   3. Haldane
   4. Fleming

First chemical analysis of protoplasm was made by _____.

1. 1. Punnet and Bateson
   2. Scheiden
   3. Flaming
   4. Mende

Teflon used for coating non-stick kitchenware is the product of chance discovery by the scientist.

1. 1. Roy J. Pulunkett
   2. Johannes George Bednorz
   3. Karl Alexander Muller
   4. William Henry

Which of the following was invented in 1895 by King Camp Gillettee?

1. 1. Knife
   2. Pliers
   3. Safety razor
   4. Scissor