1. Television was invented by : John L. Baird
2. Theory of relativity was explained by : Albert Einstein
3. Wireless Telegraph was invented by : Marconi
4. Incandescent lamp was invented by : Edison
5. X-Ray was discovered by : Wilhelm Roentgen
6. Chloroform was invented by : J.Y. Simpson
7. Who invented the practical Locomotive : Richard Trevithick
8. zone day is observed on : 16th September
9. World health day is on : 7th April
10. Navy day is celebrated on : 4th December
11. World Solar Energy Day : 3rd May
12. Commonwealth Day : Second Monday in March
13. World Employment Day : June 5
14. World Architectural Day : July 1
15. National Maritime Day : 5th April
16. Anti Terrorist Day : 21st May
17. World Anti-smoke Day : 31st May
18. Zone day is observed on : 16th September
19. World health day is on : 7th April
20. Navy day is celebrated on : 4th December
21. Which is the Highest Mountain Range : Himalayas
22. Which is the Highest Lake : Titicaca
23. Longest Railway Platform : Kharagpur (West Bengal)
24. Largest Church : Basilica of St. Peters in Vatican City
25. Largest Park : The Wood Buffalo National Park in Alberta, Canada
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