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Practice MCQ Questions and answers on Inventions-GK

Learn and practice General Knowledge questions and answers on Inventions with very easy and understandable explanations. GK questions are very helpful different type of competitive exams. Page-7 section-1

61
What African-American inventor received 5 patents in the field of shoemaking?
Discuss
Answer & Solution
Answer: Option B
Solution:
Jan Ernst Matzeliger received 5 patents in the field of shoemaking.
62
It travels over land and water. Who invented the hovercraft?
Discuss
Answer & Solution
Answer: Option D
Solution:
Christopher Cockerell invented the hovercraft in 1956. His early experiments with the idea involved a cat food tin, a coffee tin and an industrial blower.
63
In which decade was the AEEE (now the IEEE) founded?
Discuss
Answer & Solution
Answer: Option B
Solution:
The IEEE (Institute of Electrical and Electronics Engineers) was formed in 1963 by the merger of the Institute of Radio Engineers (IRE, founded 1912) and the American Institute of Electrical Engineers (AIEE, founded 1884).
64
What type of system did Paul Nipkow, John Baird, and Charles Jenkins all invent?
Discuss
Answer & Solution
Answer: Option D
Solution:
All of the inventors mentioned invented an early mechanical television system.
65
What Sir Isaac Newton invented?
Discuss
Answer & Solution
Answer: Option B
Solution:
Sir Isaac Newton invented Chronometer.
66
Who invented Bicycle?
Discuss
Answer & Solution
Answer: Option D
Solution:
Kirkpatrick Macmillan invented bicycle.
67
Who synthesized the first wholly artificial gene?
Discuss
Answer & Solution
Answer: Option A
Solution:
Synthesis of the first complete gene, a yeast tRNA, was demonstrated by Har Gobind Khorana and coworkers in 1972. Synthesis of the first peptide- and protein-coding genes was performed in the laboratories of Herbert Boyer and Alexander Markham, respectively.
68
Who discovered the first practical method of freezing food?
Discuss
Answer & Solution
Answer: Option A
Solution:
In the 1920s Clarence Birdseye discovered that if food was flash-frozen under pressure, it would freeze without the formation of ice crystals.
69
When was the Raggedy Ann doll patented?
Discuss
Answer & Solution
Answer: Option A
Solution:
Johnny Gruelle patented the Raggedy Ann doll in 1915. The Raggedy Andy doll and the Raggedy Ann books came later.
70
What Frank Whittle invented?
Discuss
Answer & Solution
Answer: Option D
Solution:
Sir Frank Whittle, (born June 1, 1907, Coventry, Warwickshire, England—died August 8, 1996, Columbia, Maryland, U.S.), English aviation engineer and pilot who invented the jet engine.