In which decade were the first successful diode and triode vacuum tubes invented?
- A. 1800s
- B. 1850s
- C. 1880s
- D. 1900s
Correct Answer: D. 1900s
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Which of the following Rivers do not flow in Africa?
- A. Nile
- B. Congo
- C. Zamberi
- D. Tigris
Correct Answer: D. Tigris
Who invented the World Wide Web?
- A. Karl Benz
- B. Chester Carlson
- C. Mary Anderson
- D. Tim Berners Lee
Correct Answer: D. Tim Berners Lee (1989)
World War 1 was started from which city?
- A. Novi Sad
- B. Belgrade
- C. Zagreb
- D. Sarajevo
Correct Answer: D. Sarajevo
How high is the world’s highest waterfall “Angel Falls”?
- A. 569 meters
- B. 779 meters
- C. 807 meters
- D. 979 meters
Correct Answer: D. 979 meters
What is the height of Nanga Parbat?
- A. 7775m
- B. 7934m
- C. 8089m
- D. 8126m
Correct Answer: D. 8126m
When did the Berlin Wall fall?
- A. 1969
- B. 1989
- C. 1991
- D. 1993
Correct Answer: B. 1989