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- Question
What charge card, developed in 1950, was the first to be approved nationally in the US?
Options- A. Discover
- B. MasterCharge
- C. Visa
- D. Diner's Club
- Correct Answer
- Diner's Club
ExplanationThe card was established by Frank McNamara and Ralph Schneider.
- 1. Ralph Samuelson was only 18 when he invented this sporting item in 1922. What was that?
Options- A. Golf tee
- B. Motorboat
- C. Water skis
- D. Hang glider Discuss
- 2. The cause of Beri Beri was discovered by
Options- A. Eijkman
- B. Macmillan
- C. Alexanderson
- D. Cockrell Discuss
- 3. Atomic theory was devised by
Options- A. Mosley
- B. John Dalton
- C. Daimler
- D. None of these Discuss
- 4. Who dicovered X-rays? Discuss
- 5. Landstrom invented
Options- A. Metallurgy
- B. Gas Engine
- C. Safety Match
- D. None of these Discuss
- 6. Who invented ECG?
Options- A. Hans Berger
- B. Einthoven
- C. G. Bist
- D. None of the above Discuss
- 7. Who discovered Insulin
Options- A. William Harvey
- B. Louis Pasteur
- C. F.G.Banting
- D. Alexander Fleming Discuss
- 8. Analytical Engine was invented by
Options- A. Dewar
- B. Charles Babbage
- C. Daimler
- D. None of these Discuss
- 9. Which insurance salesman invented the fountain pen in 1884?
Options- A. Lewis Edson Waterman
- B. Sir William Grove
- C. Charles Kettering
- D. George Fountain Discuss
- 10. Air conditioner was discovered by
Options- A. Edison
- B. Wilson
- C. Carrier
- D. Roentgen Discuss
Inventions problems
Search Results
Correct Answer: Water skis
Correct Answer: Eijkman
Correct Answer: John Dalton
Correct Answer: In 1985 the physicist Wilhelm Rontgen discovered X-rays, the "X" signifying their unknown originHe later found that the rays could pass through flesh and by using photographic plates could make images of bones inside the body
Correct Answer: Safety Match
Correct Answer: Einthoven
Correct Answer: Alexander Fleming
Correct Answer: Charles Babbage
Correct Answer: Lewis Edson Waterman
Explanation:
Lewis Edson Waterman patented the first practical fountain pen in 1884.
Correct Answer: Carrier
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