| TNPSC – Geology – 2007 | |
| Sr. No. | Questions with multiple options |
| 1. | The Seismic shear waves are slowed and attenuated in
(a) Lithosphere (b) Asthenosphere (c) Low-velocity zone (d) Upper mantle |
| 2. | Steep-sided domes that form in the craters or calderas of certain strato-volcanoes are called
(a) Cinder cone (b) Cumlo domes (c) Tholoids (d) Nuee ardent |
| 3. | A belt of negative gravity anomalies coincides with the
(a) Sunda trench (b) Kurile trench (c) Kamchatka trench (d) Sumatra trench |
| 4. | The term ‘Isostasy” was proposed by
(a) Dutton, an American Geologist, in 1889 (b) Sir George Airy, the Astronomer Royal, 1855 (c) Archdeacon Pratt, in 1855 (d) R.A Daly, in 1940 |
| 5. | Volcanoes are more numerous around
(a) Atlantic Ocean (b) Antarctic Ocean (c) Indian Ocean (d) Pacific Ocean |
| 6. | The discontinuity which separates mantle and core is
(a) Moho-discontinuity (b) Conrad-discontinuity (c) Gutenberg-discontinuity (d) Ingleman-discontinuity |
| 7. | the term ‘lithosphere’ includes
(a) Crust and mantle (b) Crust only (c) Crust and part of upper mantle (d) None of these |
| 8. | In the Richter scale the energy released by an earthquake of magnitude 2 as compared ot magnitude 1 is about
(a) Twice (b) 10 times (c) 30 times (d) 100 times |
| 9. | An alluvial fan is formed due to
(a) Fluvial erosion (b) Fluvial deposition (c) Eolian erosion (d) Eolia deposition |
| 10. | Which of the following is a group of coral islands with a deep central lagoon?
(a) Faros (b) Shelf atolls (c) Oceanic atolls (d) Guyots |
| 11. | The coastal zone where the ground slopes away from the shore line is called
(a) Berm (b) Beach face (c) Offshore point (d) Surf zone |
| 12. | Tombolos are formed
(a) Along straight coastal shores (b) In backwater shores (c) Between two islands (d) Around an island |
| 13. | The drainage pattern where streams diverge from a common area is called
(a) Centripetal braided (b) Dendritic (c) Radial |
| 14. | A longitudinal dune, parallel to windward direction, is known as
(a) Barchans (b) Self (c) Parabolic dunes (d) Fore dunes |
| 15. | New oceanic crust is formed at
(a) Subduction zone (b) Spreading centre (c) Collision zone (d) Hot spot zone |
| 16. | The maximum measured rate of sea floor spreading is about
(a) 2 cm / year (b) 6 cm / year (c) 12 cm / year (d) 16 cm / year |
| 17. | Polished and faceted surfaces produced by wind abrasion are
(a) Serirs (b) Yardangs (c) Ventifacts (d) Loess |
| 18. | Ripple marks are essentially
(a) Aeolian (b) Aeoliann and fluvial (c) Fluvial (d) Aeolian and glacial |
| 19. | The dip of stratum is the angle between the bedding and a horizontal plane. It is measured in a
(a) Vertical plane that strikes at 90° to the strike of the bedding (b) Horizontal plane that strikes at 90° to the strike of the bedding (c) vertical plane that strikes at 90° to the strike of the bedding (d) oblique plane that strikes at 90° to the strike of the bedding |
| 20. | Strike and dip of a geologic formation can be measured with the help of
(a) brunton compass (b) seismogram (c) caliper logging (d) planimeter |
| Published on 15th Oct 2021 | |
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