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.
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Question : Who gave the 'Law of Gravitation'?
Question : Who invented the electric motor?
Question : Who among the following made the first observation on Platinum as a catalyst and discovered similar triads of elements that led to the development of the Periodic Table of elements?
Question : Which of the following scientists provided the Law of Octaves?
Question : Which physical theory explains the generation of thrust by rocket engines, jet engines and deflating balloons?
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