Question : Who discovered 'Portland cement'?
Option 1: Michael Faraday
Option 2: Guglielmo Marconi
Option 3: Joseph Aspdin
Option 4: Isaac Newton
Correct Answer: Joseph Aspdin
Solution : The correct option is Joseph Aspdin .
In 1824, Aspdin invented a method for manufacturing hydraulic cement by burning a finely crushed powder of limestone and clay at high temperatures. He called this cement "Portland" because it looked like the high-quality construction stones found in Portland, England.