01. From which surface of the atmosphere do radio waves converge? Ans:- Ionosphere
02. In which layer of the atmosphere do airplanes fly? Ans:- Stratosphere
03. What is the maximum height of the troposphere from the surface? Ans:- 18 kms
04. In which months South-West monsoon is active in India? Ans:- June to September
05. Who founded the Prarthana Samaj? Ans:- Atmaram Pandurang
06. Who founded the organization 'Missionary of Charity' in Kolkata? Ans:- Mother Teresa
07. Who is famous as 'Lady with the Lamp'? Ans:- Florence Nightingale
08. Which gas is helpful in burning? Ans:- Oxygen
09. What part of the atmosphere is found up to a height of 29 km? Ans:- 97%
10. What was the immediate cause of the revolt of 1857? Ans:- Use of greased cartridges in the army
11. Who founded the Muslim League in Dhaka in 1906? Ans:- Aga Khan and Salimullah Khan
12. When was the postage stamp first introduced in India? Ans:- 1854
13. When and who implemented Permanent Settlement in Bengal, Bihar and Orissa? Ans:- Lord Cornwallis in 1793
14. Between whom was the first battle of Panipat fought in 1526? Ans:- Babur and Ibrahim Lodhi
15. Which Mughal emperor died after falling from the stairs of the library in Delhi? Ans:- Humayun
16. On which occasion did Akbar build the Buland Darwaza at Fatehpur Sikri? Ans:- Gujarat Vijay
17. Who introduced the Dahsala method of land revenue? Ans:- Akbar
18. Who built the replica of Taj Mahal in Aurangabad? Ans:- Aurangzeb
19. Who established the 'India House' in London? Ans:- Shyamji Krishna Verma
20. Who was the Viceroy of India at the time of establishment of Congress? Ans:- Lord Dufferin
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