1. The most abundant mineral in the planet earth

Perovskite

Olivine

Garnet

Plagioclase

2. A 4He nucleus that escapes from a decaying heavy radiogenic isotope is called

Alpha particle

Gamma ray photon

X-ray

Beta particle

3. Coesite is a high pressure polymorph of

Diopside

Hypersthene

Olivine

Quartz

4. The mineral daubreelite is characteristic of

Komatiite

Boninite

Iron meteorite

Lherzolite

5. Pyrope garnet and chrome diopside characteristic minerals of

Kimberlite

Lamprophyre

Lamproite

Carbonitite

6. Mantle covers percent of total mass of the planet earth

72 percent

35 percent

84 percent

20 percent

7. The crust-mantle boundary is known as

Mohorivicic discontinuity

Guternberg discontinivity

Keller discontinuity

Eskola discontinuity

8. The composition of sapphire is

Al203

CaTi03

Al2(OH)2

AlSi2O5

9. The characteristic rock type ofcontinental rift setting

Alkaline basalt

Boninite

Tholeiite

Lherzolite

10. The characteristic assemblage of eclogite facies

Lawsonite -glucophane-chloritoid

Garnet -diopside-ilmanite

Garnet -pigeonite-epidote

Garnet -omphacite-rutile

11. Ophiolites corresponds to

Abducted slices oceanic crust and mantle in orogenic belts

Basaltic eruptions in island arc

Ultramafic intrusions in continental rift

Basaltic eruptions in Ocean islands

12. As per the IPCC report, over the period 1901 to 2010, global mean sea level rose by about

0.19 m

1.5 mm

10m

0.33 m

13. The adiabatic lapse rate (per km)for moist unsaturated parcel will be approximately

6.3°C

9.8°C

6.3°P

O°C

14. Which of the following can is a common real world example of gradient wind balance?

Anomalous anticyclonic flow around a high.

Anticyclonic flow around a high.

Anomalous anticyclonic flow around a low

None of the above.

15. Among the following, identify the statement that does not apply to a barotropic atmosphere.

Density at each point is determined solely by the pressure at that point.

No increase of geostrophic wind with height.

Vertical shear depends mainly upon horizontal gradient of temperature.

Large scale motion does not depend on height.

16. Among the following, which phenomenon primarily varies on intraseasonal time scales?

ENSO.

Madden-Julian oscillation.

Southern Annular Mode.

North Atlantic Oscillation.

17. The temperature to which a sample of air is cooled by evaporating water into it to make saturated, at constant pressure is called

dry bulb temperature

dew point temperature

absolute temperature

Wet bulb temperature.

18. One of the following condition results in anomalously reduced summer monsoon rainfall spells in India Identify.

La Nina

Monsoon depressions.

A strengthened Mascarene high

Eastward shift in the Tibetan anticyclone.

19. The ratio indicating the relative importance of the horizontal and vertical friction IS called

Ekman number

Froude number

Rossby number

Reynolds number

20. The layer in a water body where the rate of change of salt in the vertical is maximum is called

Pycnocline

Thermocline

Halocline

Oxycline

21. Thunderstorms are associated with the following type of clouds

Nimbostratus

Altocumulus

Cumulonimbus

None of the above

22. Deep mixed layers in winter are notably absent in

North Pacific

Labrador Sea

Greenland Sea

Polar southern oceans

23. If the radius of the earth were to shrink by its mass remaining the same, the acceleration due to gravity on the earth's surface would

decrease by

remain unchanged

increase by

will increase by 9.8%

24. A scatter plot shows

The direction and strength of a relationship between two variables.

The linear relationship between two variables.

The prediction of value one variable knowing the value of the other variable.

None of the above

25. During which era did the initial opening of the present-day Atlantic Ocean most likely occur?

Cenozoic

Mesozoic

Paleozoic

Late Proterozoic

26. Evaporation exceeds precipitation in

Subtropics.

high latitudes.

equator.

all of the above.

27. Without greenhouse effect, the global average mean would have been, approximately,

288K

255K

273K

230 K

28. The average depth of the ocean is

37000 m

3700 m

10000 m

1000 m

29. Which of the following currents is a southward flowing current?

Kuroshio current

Gulf Stream current

Oyashio current

Pacific North equatorial current

30. Which of the following statements is false?

Density of pure water is 0.999 X 103 kg.m-3.

Albedo of the ice can even reach as high as 7%.

About of the water on the earth is frozen.

Overall salinity of sea water is 34.48 g.kg-I.

31. The positive Indian Ocean Dipole typically peaks during the following season.

March-May

June-August

December to February

September-November

32. A thrust is a

Normal fault ·

Low angle reverse fault

Decollement

Wrench fault

33. Crenulation cleavage develops during

Thrusting

Rifting

Superimposed deformation

Extension

34. Transform faults are characterized by

Lateral slip of plates

Oblique slip of plates

Vertical slip of plates

Normal slip of plates

35. layer in mantle is located at the depth of

660 km

2900 km

250 km

400 km

36. Positive Ce anomalies in sediments indicate

Reducing environments

Oxidizing environments

Low PH-conditions

High PH environment

37. The elements which prefer to remain in residue of mantle melting are known as

Incompatible elements

Hygromagmatophile elements

Compatible elements

High Field Strength Elements

38. The transition crystal structure of aragonite to calcite takes place at the depth....in the sedimentary basin

2000 m

1200 m

4500 m

150m

39. Loess corresponds to

Eolian deposits

Braided river flood plain

Alluvial fan

Lake deposits

40. Which of the following rock characterize deep water environments?

Marl

Sand stone

Loess

Carbonaceous shale

41. If C02 in sea water is increased by the addition of carbonate and bicarbonate ions from rivers, the ocean will become

More acidic (pH 6.5)

neutral in pH

less acidic (pH 8.5)

more alkaline (pH 8.4)

42. Eustatic changes in sea level are visibly marked in the

Pliestocene

Paleocene

Paleozoic

Cretaceous

43. The depth of thermocline in the oceans

increases from equator to poleward

decreases from west to east

increases from west to east

decreases from equatorial to polar regions

44. A geostationary satellite orbiting at an altitude of 36,000 kms has a period of 24 hours. What is the orbital period of a satellite orbiting at an altitude of 1000 km (take the radius of the earth 6000 km)

hr

2/3 hr

3/2 hr

1/9 hr

45. During stonns, thatched roofs of huts are lifted and are carried away by win(d) The basic principle that governs the process is

Bernoulli's principle

Coriolis force

Pascal's law

Archimedes principle

46. When moisture-laden winds are blocked by a mountain chain, intense rainfall happens as in Western Ghats regions. In such cases which one of the following factors is dominantly responsible for intense precipitation?

Mountain heights

Mountain orientation with respect to wind direction

Ascent induced by latent heat of condensation of water vapor

Vegetation on the mountain slopes

47. The radii of the earth and the moon are in the ratio 10: 1 while acceleration due to gravity on the earth's surface and moon's surface are in the ratio 1. The ratio of escape velocities from earth's surface to that of moon surface is 10:1 6:1

1. 66: 1

7. 74: 1

48. The principle of continents being in buoyant equilibrium is known as

Isostasy

the principle of buoyant equilibrium

the elastic rebound theory

none of these

49. What is the rest mass of a photon? .

0. 5 0 1

1. 1

50. If the radius of the earth were to shrink by its mass remaining the same, the acceleration due to gravity on the earth's surface would

decrease by

(b)remain unchanged

(c)increase by

(d)will increase by 9.8%

51. Melange deposits are associated with which plate margin?

paSSIve

shear

tensional margin

compressional margin

52. The presence of "magnetic stripes" recorded in the oceanic crust reflects

reversals in polarity of the Earth's magnetic field

the rate of sea floor spreading

variation in composition of the oceanic crust

all of these

53. Ophiolites are

an ancient piece of sea floor

emplaced in a compressional setting

primarily igneous rocks with a thin sedimentary covering

all the above

54. Greenhouse effect is used to describe the

heating of the atmosphere by direct solar radiation

heating of the atmosphere by infrared radiation from the earth

conversion of carbon dioxide to oxygen by green plants

condensation of moisture to form dew

55. The number of neutrons in an atom of6Cl2 are

6

12

18

21

56. The most common structural element of the silicate mineral group is

a silicon-oxygen octahedron

a silicon-oxygen tetrahedron

a silicon-aluminum tetrahedron

a silicon-nitrogen tetrahedron

57. The atomic mass number of an element is the

number of protons

number of neutrons

number of protons plus neutrons

number of electrons

58. Which is the most abundant cation in the continental crust

silicon

iron

aluminum

oxygen

59. What can be said about a data set when its standard deviation is small?

The data are far apart

All of the data have the same value

The mean of the data can never be zero

The data are close together

60. Which of the following methods better explore the disseminated sulphides

Gravity method

Seismic method

Resistivity method

Induced polarization method

61. Two atoms with the same atomic number but different mass numbers are known as

solid solution

polymorphism

isotopes

None of the above

62. Relative frequency is a measure of

skewness

Probability

Kurtosis

Variance

63. Two minerals have same chemical composition but which mineral is more likely to form at higher pressures

the mineral with the greatest density

the mineral with the lowest density

the mineral with the lowest hardness

the mineral with the highest hardness

64. Acoustic impedance is defined as

Velocity X density

Velocity/density

Resistivity X density

Density X susceptibility

65. Compared to the mass and charge of a proton an antiproton has

the same mass and the same charge

greater mass and the same charge

the same mass and the opposite charge

greater mass and the opposite charge

66. Diamond is an example of

covalent bonding

ionic bonding

metallic bonding

all the above

67. The coarse grained equivalent of a basalt is a

Rhyolite

Gabbro

Andesite

Basalt

68. The rate of chemical weathering is increased by acids. The most common natural acid on the Earth's surface is

nitric

hydrochloric

carbonic

sulphuric

69. Which of the following minerals is most stable at the Earth's surface?

hematite

mica

olivine

feldspar

70. Negative skewness of the data indicates

Higher values are more

Lower values are more

Normal distribution of the data

Zero variance

71. Which forms of energy can be transmitted through a vacuum?

(a)light, only

(b)sound, only

both light and sound

(d)neither light nor sound

72. Success of magnetic method depends exclusively on

The contrast in magnetic susceptibility

The contrast in both direction and magnitude of magnetization

The contrast in resistivity

The contrast in density

73. Clouds occur when moist air is cooled by

expansion when it falls

expansion when it rises

compression when it falls

compression when it rises

74. If the data follows Normal distribution

Mean is greater than median

Mode greater than median

Mean greater than mode

Mean, Median and Mode are equal

75. The sum of the cubes of first 9 natural numbers is

45

2025

91125

13125