Who invented the Electroscope?
- A. William Sturgeon
- B. Henry Cavendish
- C. William S. Hadaway
- D. William Gilbert
Correct Answer: D. William Gilbert (1600s)
Correct Answer: B. Pakistan
Correct Answer: C. Florence Nightingale
Correct Answer: C. USA
Correct Answer: C. Ibn-e-Kathir
Correct Answer: D. 13,171
The total length of the Great Wall of China built in different dynasties is 21,196.18 kilometers (13,171 miles), announced by China’s State Administration of Cultural Relics in 2012.
Correct Answer: C. Benjamin Banneker