Review each question and reveal answers to strengthen your understanding
1In the 1700s, who would pay the postage fee for letters before the stamp was invented?
✅ Correct Answer: 3
2
Who synthesized the first wholly artificial gene?
✅ Correct Answer: 1
3FROZEN FOOD - Who discovered the first practical method of freezing food?
✅ Correct Answer: 1
4When was the Raggedy Ann doll patented?
✅ Correct Answer: 1
5What Frank Whittle invented?
✅ Correct Answer: 4
6When was the first Lionel trains manufactured?
✅ Correct Answer: 3
7What item, originally called the 'Whirlwind', was invented by Ives McGaffey in 1869?
✅ Correct Answer: 4
8What office item was invented by Bette Nesmith Graham in 1951?
✅ Correct Answer: 3
9What George Pullman invented?
✅ Correct Answer: 1
10Who invented Bakelite?
✅ Correct Answer: 2
11What toy was invented by Joshua Lionel Cowen around 1900?
✅ Correct Answer: 3
12This African-American woman physical therapist worked with soldiers disabled in World War II. She invented a device that helped the disabled to eat by delivering food through a tube to a mouthpiece.
✅ Correct Answer: 1
13What invention by Garnet Carter made its debut at the Fairyland Inn Resort in Lookout Mountain, Tennessee, in 1927?
✅ Correct Answer: 1
14Who invented the phonograph?
✅ Correct Answer: 2
15What beverage was invented by Charles Alderton in 1885 in Waco, Texas?
✅ Correct Answer: 3
16
Who invented fuel cells in 1839?
✅ Correct Answer: 2
17
The ELECTRIC BATTERY, who's charged with inventing this one?
✅ Correct Answer: 4
18
In which decade was the ARRL founded?
✅ Correct Answer: 4
19
Who invented the Seed Drill?
✅ Correct Answer: 1
20What drink was invented by Charles Leiper Grigg in 1929?
✅ Correct Answer: 1
21
For what is Charles Babbage (1792-1871) remembered?
✅ Correct Answer: 1
22
Who invented Automobiles using gasoline?
✅ Correct Answer: 2
23Who invented the battery?
✅ Correct Answer: 2
24
Where were wigs first invented?
✅ Correct Answer: 3
25Who was the first person to patent the JET ENGINE?
✅ Correct Answer: 1
26The initials JCB on earth-moving equipment are those of the founder of the company that makes it. What is his name?
✅ Correct Answer: 2
27What treat was invented by 11-year-old Frank Epperson in 1905?
✅ Correct Answer: 1
28When was Milk Tray first introduced?
✅ Correct Answer: 1
29When was the toothbrush invented?
✅ Correct Answer: 1
30What item of apparel was invented by Ellery Chun, a Hawaiian clothing merchant, in 1931?