Exercise 2

Question 36 :

Who invented Bicycle?

A). Leo H Baekeland
B). Karl Benz
C). Evangelista Torricelli
D). Kirkpatrick Macmillan
Answer : Option D

Question 37 :

In which decade with the first transatlantic radio broadcast occur?

A). 1850s
B). 1860s
C). 1870s
D). 1900s
Answer : Option D

Explanation :

On December 12, 1901, a radio transmission received by Guglielmo Marconi resulted in the first transmission of a transatlantic wireless signal (Morse Code) from Poldhu, Cornwall, to St. John's, Newfoundland.

Question 38 :

In the 1700s, who would pay the postage fee for letters before the stamp was invented?

A). The sender
B). There was no fee
C). The receiver of the letter
D). The post office
Answer : Option C

Explanation :

Later in 1840, Rowland Hill invented the stamp, which was paid for by the sender, not the receiver.

Question 39 :

Who synthesized the first wholly artificial gene?

A). Hargobind Khorana
B). J.J. Thompson
C). Benjamin Franklin
D). Meghnad Saha
Answer : Option A

Question 40 :

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.