1. In Stratosphere part of the Earth's atmosphere is the Ozone layer present.
2. Ionosphere part of the Earth's atmosphere is suitable for radio communication.
3. The exosphere is the outermost layer of the Earth's atmosphere.
4. Study of rock that is called Petrology.
5. Granite and Basalt are Igneous types of rocks.
6. Deposition of organic and non-organic matter over a period of time produces Sedimentary type of rocks.
7. Igneous and Sedimentary rocks undergo changes due to pressure and change in temperature under the Earth's surface, this change led to the formation of Metamorphic rock.
8. The angular distance of a point on the Earth's surface, measured in degrees from the center of the Earth that is called Lattitude.
9. The angular distance measured in degrees along the equator, east or west of the Prime Meridian is called Longitude.
10. The line that passes through 180 degrees East or West Meridian of longitude which falls on the opposite side of the Greenwich Meridian is called International Date Line.
11. 0-degree longitude that passes through Greenwich near London is called Greenwich Mean Time (GMT).
12. The 82 and 1/2 degree longitude that passes through Allahabad and is 5 and 1/2 hour ahead of the GMT is that is called Indian Standard Time (IST).
13. The two days during the year when the day and night are almost equal throughout the world because the sun shines vertically over the equator that is called Equinox.
14. The imaginary line that passes through the Earth midway between the North pole and the South pole that is called the Equator.
15. The imaginary line drawn out on the global map from pole to pole and perpendicular to the Equator is called Meridian.
16. The position of the Earth in its orbit when it is at the greatest distance from the Sun that is called Aphelion.
17. The position of the orbit of the moon when it is at its greatest distance from the Earth is that called Apogee.
18. The tropical storm in the Carribean or West Pacific Ocean with extremely strong winds that is called Hurricane.
19. The wind which rotates in an anti-clock direction in the Northern Hemisphere and in a clockwise direction in the Southern Hemisphere that is called Tornado.
20. The tidal mouth of a river where the salt water of the tide meets the fresh water of the river current that is called Estuary.
21. Lines on the map denoting places experiencing equal barometric pressure is called Isobars.
22. Lines denoting equal depth in the sea is called Isobaths.
23. The 7th largest country of the world in terms of area is India.
24. The fertile soil generally found in UP, Punjab, Haryana, and Bihar is called Alluvial soil.
25. Which soil is suitable for the cultivation of cotton, wheat, oilseeds, and tobacco that is Black soil.
26. Jhelum, Chenab, Ravi, Beas, and Sutlej are the tributaries of Indus river.
27. Yamuna, Chambal, Betwa, Sone, Ghagra, Gandak and Gomti are the tributaries of The Ganges river.
28. Teesta river is the tributary of The Brahmaputra river.
29. On Sutlej river in Punjab Bhakra Nangal Dam is constructed.
30. On Krishna river in Karnataka Nagarjuna Sagar Dam is constructed.
31. On Bhagirathi river in Uttaranchal Tehri dam is constructed.
32. World largest producer of Mica is India.
33. Corbett national park is in Uttarakhand, formerly known as Uttaranchal.
34. Kaziranga wildlife sanctuary in Assam is famous for one horned Rhino.
35. In Rajasthan state, Sariska sanctuary is situated.
36. Simlipal National Park is in Orissa.
37. The world's largest saltwater lake is the Caspian Sea (in Russia).
38. The world's largest freshwater lake is
Lake Superior (in Canada).
39. The largest ocean in the world is the Pacific ocean.
40. The smallest ocean in the world is
the Arctic ocean.
41. The peso is the currency of Argentina.
42. Copenhagen is the capital of Denmark.
43. Parliament of Russia is called Duma.
44. National Emblem of Australia is
Kangaroo.
45. The old name of Sri Lanka is
Ceylon.
46. Rome country is known as the City of Seven Hills.
47. Boundary line between North Korea and South Korea is called the 38th parallel.
48. International Women's Day is celebrated on
March 8.
49. Boundary line between India and China is called
McMohan Line.
50. Cuba country is known as the Sugar Bowl of the World.
