Exercise 1

Question 36 :

What Enrico Fermi invented?


A). X ray machine
B). Betatron
C). Cyclotron
D). Nuclear reactor
Answer : Option D

Explanation :

Invented in 1942.


Question 37 :

Which of the following was first patented by an Australian in 1889?


A). Electric Drill
B). Electric Shaver
C). Electric Fence
D). Electric Heater
Answer : Option A

Explanation :

The Electric Drill was the invention of Arthur James Arnot. On 20 August 1889 he patented his design while working for the Union Electric Company in Melbourne. His original design was meant primarily for drilling rock to find coal!


Question 38 :

Who among the following invented the small pox vaccine?


A). Robert Koch
B). Edward Jenner
C). Robert Hooke
D). Louis Pasteur
Answer : Option B

Question 39 :

What George Westinghouse invented?


A). Light bulb
B). Electric razor
C). Refrigerator
D). Railway air brakes
Answer : Option D

Explanation :

Invented in 1868.


Question 40 :

Who is the only U.S. President to invent and patent something?


A). Abraham Lincoln
B). Theodore Roosevelt
C). Thomas Jefferson
D). Rutherford B. Hayes
Answer : Option A

Explanation :

In 1849 Honest Abe invented a method to aid ships that got stuck on sandbars. He called it A Device for Buoying Vessels Over Shoals. It was never used.