Science Test 2 General Science Aptitude
Science Test 2 General Science Aptitude
Question 21
Who discovered X-rays?
Wilhelm Roentgen discovered X-rays in 1895, which became crucial for medical imaging.
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Question 22
Zero was invented by_____?
The concept of zero was developed in ancient India and later popularized by Al Khwarizmi through his works in mathematics.
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Question 23
Who propounded the theory that the Earth revolves round the Sun?
Nicolaus Copernicus proposed the heliocentric theory, stating that Earth revolves around the Sun.
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Question 24
Who discovered hydrogen?
Henry Cavendish discovered hydrogen in 1766, calling it 'inflammable air' due to its flammability.
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Question 25
Who built the first fully practical airplane?
The Wright brothers, Wilbur and Orville, built and flew the first fully practical airplane in 1903.
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