Inventions problems
- 1. Who invented waterproof fabrics ?
Options- A. James Dewar
- B. Charles Goodyear
- C. Mary Moore
- D. Charles Macintosh Also asked in: Bank Exams, Bank Clerk
Correct Answer: Charles Macintosh
Explanation:
Charles Macintosh (29 December 1766 ? 25 July 1843) was a Scottish chemist and inventor of waterproof fabrics.He devoted all his spare time to science, particularly chemistry, and before he was twenty resigned his clerkship to take up the manufacture of chemicals. In this he was highly successful, inventing various new processes. His experiments with one of the by-products of tar, naphtha, led to his invention of waterproof fabrics.
- 2. FROZEN FOOD ? Who discovered the first practical method of freezing food?
Options- A. C. Birdseye
- B. F. Rozenosh
- C. G. Findus
- D. R. Scott Discuss
Correct Answer:
- 3. Bushwell invented
Options- A. Atomic Bomb
- B. Submarine
- C. Urey
- D. Hovercraft Discuss
Correct Answer: Submarine
- 4. The first hand glider was designed by??
Options- A. Leonardo DaVinci
- B. The Wright brothers
- C. Francis Rogallo
- D. Galileo Discuss
Correct Answer: Leonardo DaVinci
- 5. The first effective vaccine against polio was prepared by ?
Options- A. Robert Edwards
- B. James Simpson
- C. H Gibbon
- D. Jonas E Salk Also asked in: AIEEE, Bank Clerk
Correct Answer: Jonas E Salk
- 6. Who Discovered The Nucleus of a Cell?
Options- A. Otto Hahn
- B. John Dalton
- C. Robert Brown
- D. Marie Curie Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank PO
Correct Answer: Robert Brown
Explanation:
Robert Brown, Scottish botanist, Discovered The Nucleus of a Cell in 1831, London. When Brown was studying orchids under microscope when he observed an opaque area, which he called the "Areola" or "Nucleus", in the cells of the flower's outer layer.
The nucleus was also described by Franz Bauer in 1804 but in detail Robert Brown made it in 1831.
- 7. Who invented Electric Generator?
Options- A. Michael Faraday
- B. Thomas Alva Edison
- C. Graham Bell
- D. Alfred Nobel Also asked in: CAT, Bank Exams, AIEEE, IT Trainer, Database Administrator, Bank PO, Analyst
- The operating principle of electromagnetic generators was discovered in the years of 1831?1832 by Michael Faraday.
- The principle later called Faraday's law, is that an electromotive force is generated in an electrical conductor which encircles a varying magnetic flux.
Correct Answer: Michael Faraday
Explanation:
Michael Faraday invented Electric Generator in 1831.
- 8. When was Barb Wire patented
Options- A. 1898
- B. 1868
- C. 1874
- D. 1866 Also asked in: CAT, Bank Exams, AIEEE, Database Administrator, Bank PO, Analyst
- Glidden was born in New York in 1812. He invented Barbed Wire in 1873 and was granted the patent on Nov. 24, 1874. After a three year battle over the patent, which he eventually won received a patent for the modern invention in 1874 after he made his own modifications to previous versions.
Correct Answer: 1874
Explanation:
Joseph F. Glidden - Father of Barbed Wire.
- 9. Simpson and Harrison are associated with the invention of
Options- A. Boson
- B. Chloroform
- C. Balloon
- D. None of these Discuss
Correct Answer: Chloroform
- 10. Who invented fuel cells in 1839?
Options- A. Buckminster Fuller
- B. Sir William Grove
- C. Sylvester Graham
- D. Joyce Hall Discuss
Correct Answer: Sir William Grove
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