Science, Technology & Inventions Quiz

Joseph Aspdin invented Portland cement in 1824 by burning finely ground limestone and clay in a kiln. Newton discovered laws of motion and gravitation, H.C. Urey discovered deuterium, and John Kay invented the flying shuttle - none invented cement.

Willem Kolff invented the first dialysis machine (kidney machine) in 1943 during World War II. Ramsay discovered noble gases, Caxton brought printing to England, and Gillette invented the safety razor - none worked on kidney machines.

Alexa Internet, founded in 1996, was a web information company that provided commercial web traffic data and analytics, known for the Alexa Rank. It was acquired by Amazon in 1999. Alexa is not an Android mobile, programming language, or 'all of the above' - it specifically refers to the web analytics company.

Louis Daguerre invented the daguerreotype process in 1839, one of the first practical photographic processes. Goodyear invented vulcanized rubber, and Fawcett is not associated with photography - L. Daguerre is correctly credited with pioneering photography.

Edward Butler invented the first petrol-powered motorcycle (the Butler Petrol Cycle) in 1884, making option B correct. Charles Darwin (A) was a biologist famous for evolution theory, Isaac Pitman (C) developed shorthand writing systems, and Will Brand (D) is not associated with motorcycle invention.

Lewis Waterman invented the fountain pen in 1884 after frustration with leaking pens, making option C correct. Volta (A) worked on electricity, Ohm (B) discovered electrical resistance laws, and John Kay (D) invented the flying shuttle for weaving.

Larry Wall, creator of Perl, made this famous quote about writing assembly-like code in any language, making option D correct. Guido Van Rossum (A) created Python, Dennis Ritchie (B) created C, and Bjarne Stroustrup (C) created C++ (note the typo in his name).

Dave Grohl is a musician (Nirvana, Foo Fighters) while the others are computer science pioneers: Alan Cooper designed Visual Basic, John Backus created Fortran, and Grace Hopper worked on compilers. This makes option C the odd one out.

Yahoo! stands for 'Yet Another Hierarchical Officious Oracle,' making option B correct. This was chosen by founders Jerry Yang and David Filo as a self-referential, humorous acronym for their web directory.

Vitamin C supports adrenal function and cortisol production, helping regulate stress response. Vitamins A, D, and K are essential for other functions (vision, bone health, clotting) but aren't primarily linked to stress hormone release.

Vitamin K is essential for synthesizing prothrombin and other clotting factors in the liver. Without it, blood cannot clot properly. Potassium is an electrolyte. Proteins are building blocks. Vitamin E is an antioxidant unrelated to clotting.

Carbon monoxide binds to hemoglobin 200+ times more strongly than oxygen, causing hypoxia and tissue damage. CO2, SO2, and SO3 are respiratory irritants but don't enter bloodstream as efficiently. CO is called the silent killer for this reason.

Nicolaus Copernicus formulated the heliocentric model in the early 16th century, proposing that the Earth revolves around the Sun rather than being the center of the universe. His work 'De revolutionibus orbium coelestium' (1543) fundamentally changed astronomy. Kepler later refined this with elliptical orbits, while Galileo provided observational evidence.

Ammonia (NH3) has thermodynamic properties that make it an effective refrigerant, including a high latent heat of vaporization. It was widely used in early refrigeration systems and is still used in industrial applications today due to its efficiency. CO2 and chlorine are not effective refrigerants, while H2S is toxic and not used for this purpose.