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General Knowledge on Inventions | GK Test on Inventions Page 15
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Inventions

General Knowledge on Inventions

(Click on suggested Options to select the answer | Color Red means : Wrong & Green Means: Correct)

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141. Who was discovered air conditioner?   
142. With which the invention of Simpson and Harrison are associated? 
143. Which scientists discovered Helio-Centric Theory?
144.  Who is known as 'father of refrigeration' ?
145. In which year parachute was invented in Italy?
146. In which century compass was invented? 
147. In which year was invented world's first long range ballistic missile named V-2 rocket?
148. Which year first headset was invented by Nathaniel Baldwin?
149. Which scientists first solar cell was invented in 1883?
150. Which year first personal computer controlled with a keyboard was invented?

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