Question 1. Where is the Blacknecked Crane seen in India?
Question 2. Where did the first recorded incident of release of hazardous waste occur in India?
Question 3. What percentage of land in India is under forest cover?
Answer: About 14 per cent
Question 4. The Mussoorie hills of the Doon valley in Uttar Pradesh are being destroyed by:
Question 5. Which aquatic animal has been released on a large scale in the Ganga to rid it of waste flesh?
Question 6. What fraction of land in India is lying waste as a result of environmental problems?
Question 7. Where is the National Museum of Natural History located?
Answer: New Delhi
Question 8. Why is the Silent Valley so called?
Answer: It is silent during night
Question 9. Which river serves the largest cultivable area?
Question 10. Which Indian State has named all its tourist resorts after birds?
Question 11. The distance of the Earth from the Sun is about _____
Answer: 149 million km.
Question 12. The sun comprises _____% of the total matter of the solar system.
Question 13. The permanent tilt of the Earth’s axis and the revolution of the Earth in its orbit together cause _____
Answer: Varying lengths of day and night at different times of the year.
Question 14. The Earth’s axis always points in the same direction in the sky to _____
Answer: The Pole star.
Question 15. The Earth is permanently tilted to its orbital plane at an angle of _____
Question 16. At the summer solstice in the Northern Hemisphere, _____ latitudes will have the longest night.
Question 17. When the Sun is vertically overhead along the Tropic of Capricorn at midday, _____
Answer: Night is equal to 24 hours at the North pole.
Question 18. 1° of longitude represents _____
Answer: 111 kms along the equator.
Question 19. ‘Great Circles’ can extend in _____
Answer: any direction.
Question 20. The ‘International Date Line’ is _____
Answer: the line at which a day is lost or gained.
Question 21. To avoid confusion the world is divided into _____
Answer: 24 belts, each 15° of longitude wide.
Question 22. The Northern Hemisphere receives its maximum and minimum amount of solar radiation during _____
Answer: June and December respectively.
Question 23. Which is referred to as ‘Land of the Midnight Sun’?
Answer: In summer the region north of the arctic circle.
Question 24. Canada and the USA have _____
Answer: Five time zones.
Question 25. The stratification of sedimentary rocks is caused mainly by _____
Answer: The deposition of rock particles in layers.
Question 26. A rift valley is formed mainly because of the _____
Answer: Forces of tension in the Earth’s crust.
Question 27. The ‘Cigar’ shaped planetary system confirms to the __
Answer: Tidal Hypothesis.
Question 28. Binary Star Hypothesis was given by _____
Answer: Russel and Littleton.
Question 29. Movements occurred in Palaeozoic Era are _____
Answer: Taconian, Caledonian, Armonican, Variscon.
Question 30. The ‘Deccan Lava Region’ was formed during _____
Answer: Cretaceons period.
Question 31. The ‘Transverse waves’ are _____
Answer: ‘S’ waves.
Question 32. Which pair is ‘incorrect?
(a) Conrad Discontinuity—Between Sial and Sima.
(b) Mohorovicic Discontinuity—Between Crust and Mantle.
(c) Repetti Discontinuity—Between Upper Mantle and Lower Mantle.
Question 33. Asthenosphere is _____
Answer: the layer beneath the lithosphere.
Question 34. Who used the term ‘Isostasy’ (equal standing) for the first time?
Question 35. ‘Continental drift’ refers to _____
Answer: the horizontal movement of the continents on a vast scale.
Question 36. The idea of Continental drift was developed in America by _____
Answer: F.B. Taylor.
Question 37. The Wegener’s Hypothesis is associated with _____
Answer: The continental drift.
Question 38. The hypothesis of ‘sea-floor spreading’ was first formulated by _____
Answer: Prof. Harry Hess of Princeton University.
Question 39. In the hypothesis of ‘plate-tectonics’, it is assumed that the earth is composed of _____
Answer: 20 litospheric plates.
Question 40. If the time at Greenwich is 6.00 A.M., what is the longitude at which the time is 2 A.M.?
Question 41. If the time at the Greenwich is 10.00 P.M. on April 20, what is the longitude of the place where the time is 8 A.M. on April 21?
Question 42. Gabbro is an example of _____
Answer: Extensive rocks.
Question 43. Lava-obsedian is an example of _____
Answer: Igneous rocks.
Question 44. The ‘Batholiths’ covering small areas are called _____
Question 45. ‘Boss’ is _____
Answer: the Magma after cooling is not parallel to the layers around it and makes an angle with them.
Question 46. Which pair is incorrect?
(a) Loess—Wind-borne sedimentary rocks.
(b) Till—Ice-deposited sedimentary rocks.
(c) Breccia—Sedimentary rocks formed because of the process of comenation.
Question 47. Which pair is incorrect?
(a) Conglomerate—Mechanically formed sedimentary rocks.
(b) Coal—Organically formed sedimentary rocks.
(c) Saltpetre—Chemically formed sedimentary rocks.
Question 48. Which feature may occur when lava cools at the surface?
Answer: Basalt plateau.
Question 49. An intrusion of magma along a bedding plane is called____
Question 50. When a mass of magma cuts across the bedding plane, then it is called _____