Geology Important Question Papers

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Important Question Papers on Geology

1. Quartz is an example of
(1) Inosilicate
(2) Tectosilicate
(3) Sorosilicate
(4) Cyclosilicate

2. Which of the following folds shows two hinges ?
(1) Box fold
(2) Anticline fold
(3) Chevron fold
(4) Overturned fold

3. Isopach are lines (imaginary)
(1) connecting points of equal thickness of bed
(2) connecting points of similar altitude
(3) connecting points of similar contacts
(4) connecting points of similar height of ground water

4. Crenulation cleavages are
(1) cleavages produced by first folding
(2) produced if cleavages are folded during second folding
(3) produced if second folding does not effect first folding
(4) produced if there is third folding

5. “Inclination angle of a fold axis, in relation with the imaginary horizontal, measured on a limb” is called
(1) Pitch
(2) Plunge
(3) interlimb angle
(4) apparent dip

6. If thickness of both limbs of a fold is varying at every point, the type of fold is
(1) parallel fold
(2) similar fold
(3) chevron fold
(4) box bold

7. The bedding and the axial plane cleavage remain at a right angle to each other at which place ?
(1) at the limb of fold
(2) at the hinge of fold
(3) on vertical fault plane
(4) on inclined fault plane

8. A dip slip fault on which the hanging wall has moved up relative to the footwall is referred as
(1) transform fault
(2) normal fault
(3) reverse fault
(4) parallel fault

9. Which is a fundamental unit for naming the rocks in lithostratigraphic classification ?
(1) Bed
(2) Member
(3) Formation
(4) Group

10. What is age of Deccan Traps ?
(1) cretaceous to palaeocene
(2) lower cretaceous
(3) Palaeocene to Eocene
(4) Jurassic to cretaceous

11. Delwara formation is related to
(1) BGC
(2) upper Aravalli supergroup
(3) upper Delhi supergroup
(4) lower Aravalli supergroup

12. The mode of preservation of a silicified fossil stem is called
(1) Carbonization
(2) Petrifaction
(3) mould
(4) imprint

13. A fossil with short geological age and wide geographical occurrence is called
(1) living fossil
(2) ediacaran fossil
(3) index fossil
(4) tracks and trails

14. Which of the following is not a principle of stratigraphy ?
(1) order of super position
(2) present is key to the past
(3) law of fossils
(4) law of lithology

15. Geological age of Mesoproterozoic is
(1) 1600-1000 Ma
(2) 3600-2500 Ma
(3) 2500 — 1600 Ma
(4) 542-235 Ma

16. Age of Bundelkhand granite and closepet granite is
(1) 3600-3500 Ma
(2) 3000-2900 Ma
(3) 2600-2500 Ma
(4) 1700-1600 Ma

17. Sanu limestone belong to which of the following geological time ?
(1) Pleistocene
(2) Miocene
(3) Carboniferous
(4) Eocene-Oligocene

18. On which of the stratigraphic group of rocks, the fort of Chittorgarh rests ?
(1) Alwar quartzite
(2) Semri and Kaimur
(3) Jharol group
(4) Rewa and Bhander

19. The presence of Ediacara fossils in Marwar supergroup has given it age as
(1) 745 —680 Ma
(2) 635-542 Ma
(3) 680-635 Ma
(4) 745-732 Ma

20. Jaisalmer calcareous sandstone of golden yellow colour belong to which age of stratigraphy ?
(1) Traissic
(2) Jurassic
(3) Cretaceous
(4) Carboniferous

21. Mantle of the earth is having composition similar to
(1) Peridotite
(2) Granite
(3) Anorthosite
(4) kimberlite

22. Which of the following igneous rock have high magnesia content and spinifix texture ?
(1) Kimberlite
(2) Picrite
(3) Tinguaite
(4) Komatiite

23. Which of the following rocks is oversaturated, plutonic with quartz and more plagioclase than orthoclase ?
(1) Granite
(2) Granodiorite
(3) Dhiorite
(4) Dacite

24. The necessary minerals to diagnose an igneous rock, are called
(1) Essential
(2) Secondary
(3) Accessory
(4) tertiary

25. “A group of metamorphic rocks of varying composition, characterised by a definite set of minerals which have arrived almost at equilibrium under a given combination of pressure and temperature conditions” is called
(1) A metamorphic zone
(2) A metamorphic facies
(3) a metamorphic grade
(4) palingenesis

26. A metamorphic texture which produces large crystals embedded in fine grained groundmass are called
(1) Granoblastic
(2) Blastopsephitic
(3) Granulose
(4) porphyroblastic

27. Which type of metamorphism its represented by occurrence of crush-greccias, micro-greccias, flaser-rock, and mylonite ?
(1) Cataclastic
(2) Dynamothermal
(3) Plutonic
(4) pneumatolitic

28. Granulose structure is present in
(1) Garnetiferous mica schist
(2) Hornblende Gneiss
(3) Kyanite Garnet granulite
(4) Slate

29. What impurity is needed in limestone, which can produce wollastonite during metamorphism ?
(1) Alumina
(2) Silica
(3) Alumina and Silica both
(4) Magnesia

30. “Snowball garnets” are products of which type of metamorphism ?
(1) Dynamothermal
(2) Plutonic
(3) Pneumatolytic
(4) Static

31. Marble generally bears
(1) Granulose structure
(2) Foliated structure
(3) Slaty structure
(4) Schistose structure

32. Among these which element is present in highest quantity in magma ?
(1) Oxygen
(2) Silicon
(3) Aluminium
(4) Iron

33. A texture of igneous rock, in which most of the crystals are euhedral, the texture is called
(1) Allotriomorphic
(2) Panidiomorphic
(3) Hypidiomorphic
(4) Granitic

34. Which igneous rock consists of more han 90% of plagioclase feldspar ?
(1) Gabbro
(2) Syenite
(3) Pegmatite
(4) Anorthosite

35. Which rock is also known as museum of minerals ?
(1) Granite
(2) Pegmatite
(3) Gabbro
(4) Lamprophyre

36. A mudstone consisting of a mixture of calcium carbonate and clay is called
(1) Dolomite
(2) Marl
(3) Claystone
(4) Chalk

37. A bed deposited during one year is termed as
(1) Rhythmic bed
(2) Cyclothem
(3) Varvedbed
(4) Megacyclothem

38. Which type of sedimentary rock is consisting of gravels, pebbles, cobbles or boulders of rounded shape ?
(1) Agglomerate
(2) Conglomerate
(3) Breccia
(4) Grit

39. Heavy minerals can be separated in the laboratory by using
(1) Bromoform
(2) Canada Balsam
(3) Hydrochloric acid
(4) Sulphuric acid

40. What is called “post-depositional but pre-metamorphic changes in sediments” ?
(1) only compaction
(2) cementation only
(3) diagenesis
(4) transportation

41. Which of the following zones is absent in soil profile of desert ?
(1) A
(2) B
(3) D
(4) C

42. Which of the following districts of Rajasthan has high fluoride content in the ground water ?
(1) Nagaur
(2) Karauli
(3) Alwar
(4) Dhaulpur

43. When did ‘great oxygen event’ occur in geological history, around ?
(1) 4000 — 4100 Ma
(2) 3000-3100 Ma
(3) 2500-2600 Ma
(4) 542 Ma

44. Jhamarkotra rock phosphate deposit mainly occurs in association with which rock ?
(1) Schist
(2) Dolomitic limestone
(3) Quartzite
(4) Slate

45. Which of the following economic mineralization set komatiite rock may host ?
(1) Magnetite — Chromite
(2) Rare earths — Chromite
(3) Lead — Zinc — Copper
(4) Copper — Iron — Nickel

46. Which of the following minerals can make diamond mesh boxwork structure in Gossan ?
(1) Molybdnite
(2) Bornite
(3) Chalcopyrite
(4) Galena

47. Fire proof cloths can be made from
(1) Wollastonite
(2) Talc
(3) Gypsum
(4) Asbestos

48. What is genesis of ‘Blue dust Ores’ ?
(1) Hydrothermal
(2) Residual concentration
(3) Volcanogenic
(4) Contact metamorphism

49. Liquid immissibility in magma may occur in between
(1) Oxides and Sulphides
(2) Oxides and Silicates
(3) Carbonates and Sulphates
(4) Carbonates and Arsenites

50. What is Carnotite ?
(1) Thorium ore
(2) Uranium ore
(3) Manganese ore
(4) Tin ore