1) What is the Ph value of human blood? 7.40
2) What is the rarest blood group? AB negative
3) What is the average weight of the human brain? 1,400 grams
4) Alcohol affects which part of the brain? Cerebellum
5) Longest bone in human body? The femur which is the thigh bone
6) What is the metal present in hemoglobin? Iron
7) Who invented World Wide Web? Tim Berners-Lee
8) When was the camera phone invented? The first camera phone was invented in June 1997 by Philippe Kahn. The first mobile camera photo taken was that of his just-born daughter on 11 June 1997. That phone was J-SH04 made by Sharp.
9) When was the smart phone launched? On June 29, 2007, when Apple's Iphone was launched, selling 1 million of its smart phones in just 74 days.
10) When was the first text message or SMS sent? December 3, 1992 by Neil Papworth, a 22 year old engineer in the UK used a personal computer to send the text message 'Merry Christmas' via a Vodafone network to the phone of Richard Jarvis who was at Newbury, Berkshire
11) Who were the creators of YouTube? YouTube was created in February 2005 by Steve Chen, Chad Hurley and Jawed Karim out of a garage.
12) Who were the creators of Twitter? Jack Dorsey, Evan Williams, Biz Stone and Noah Glass on March 2006. The site was launched in July 2006.
13) Who are founders of Yahoo? Yahoo was founded in January 1994 by Jerry Yang and David Filo, electrical engineering graduate students at Stanford University.
14) Who invented 3D printer? The first working 3D printer was created in 1984 by Chuck Hull of 3D Systems Corp.
15) Who Invented the Jeans? Levi Strauss
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