General Knowledge - Inventions

Exercise :: Inventions - Section 1

  • Inventions - Section 1
89. 

Who synthesized the first wholly artificial gene?

A. Hargobind Khorana
B. J.J. Thompson
C. Benjamin Franklin
D. Meghnad Saha

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

90. 

FROZEN FOOD - Who discovered the first practical method of freezing food?

A. C. Birdseye
B. F. Rozenosh
C. G. Findus
D. R. Scott

Answer: Option A

Explanation:

In the 1920s Clarence Birdseye discovered that if food was flash-frozen under pressure, it would freeze without the formation of ice crystals.

91. 

When was the Raggedy Ann doll patented?

A. 1915
B. 1920
C. 1919
D. 1911

Answer: Option A

Explanation:

Johnny Gruelle patented the Raggedy Ann doll in 1915. The Raggedy Andy doll and the Raggedy Ann books came later.

92. 

What Frank Whittle invented?

A. Radar
B. Ethyl gasoline
C. Sonar
D. Jet propulsion

Answer: Option D

Explanation:

Invented in 1937.

93. 

When was the first Lionel trains manufactured?

A. 1920
B. 1890
C. 1901
D. 1944

Answer: Option C

Explanation:

Joshua Lionel Cowen and Harry C. Grant started the Lionel Manufacturing Company on Sept. 5, 1900 in New York City. The first train, which was called the Electric Express, was manufactured in 1901 and was an open gondola propelled by a fan motor. As time has passed, the trains have been made in different colors and styles.

94. 

What item, originally called the 'Whirlwind', was invented by Ives McGaffey in 1869?

A. Blender
B. Electric mixer
C. Washing machine
D. Vacuum cleaner

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

95. 

What office item was invented by Bette Nesmith Graham in 1951?

A. Fax machine
B. Stapler
C. Liquid Paper
D. Copy machine

Answer: Option C

Explanation:

Bette's other claim to fame was being the mother of Michael Nesmith of the Monkees.

96. 

What George Pullman invented?

A. Sleeping (railway) car
B. Airship
C. Box car (railway)
D. Air brakes

Answer: Option A

Explanation:

Invented in 1857.