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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