Inventions MCQs – Mock Test 174

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Free Laser MCQ App Download (iOS & Android): In which one of the following year the first laser was discovered?; MCQ with answers: 1940, 1950, 1960, and 1930. Practice inventions and inventors questions and answers, Apple Book to download free chapter to master technology history.

Laser MCQ – Mock Test 174 PDF Download

MCQ 866: In which one of the following year the first laser was discovered?

1950
1940
1930
1960

MCQ 867: In which one of the following year, internal combustion engine was discovered?

1811
1855
1826
1801

MCQ 868: Penicillin was discovered by:

Sir Frances Gabe
Sir George Beers
Sir Alexander Fleming
Sir Louis Pasteur

MCQ 869: Patented food bar was designed to help burn fat by a pathologist in California named as:

Dr Larry wang
Sir George Beers
Sir Norman Rolston
Sirr James Naismith

MCQ 870: In which century, Pascaline calculator was patented?

16th Century
19th Century
17th Century
15th Century

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