GATE GG-1 purpose:exam-prep PYQs & Answers — Page 55

Questions 541–550 of 650. Imported answers require independent review unless marked reviewed.

Topic practice 650 questionsPage 55 of 65

The supercontinent that existed in the late Mesoproterozoic to early Neoproterozoic time was

Your answerChoose one option.

Kenorland.

Columbia.

Rodinia.

Pangaea.

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The figure below shows the triple junction between three plates A, B and C. The boundary between the plates A and B is a ridge with a half-spreading rate of 4 cm/year. The A-C and B-C boundaries are collinear and orthogonal to the A-B ridge. The A-C boundary is a dextral transform fault with a relative velocity of 6 cm/year. The boundary between plates B and C is

Diagram for Geology and Geophysics question 12

Your answerChoose one option.

dextral transform fault with a relative velocity of 10 cm/year.

dextral transform fault with a relative velocity of 2 cm/year.

sinistral transform fault with a relative velocity of 2 cm/year.

sinistral transform fault with a relative velocity of 6 cm/year.

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A rock follows Mohr-Coulomb failure criterion. Which one of the Mohr-Coulomb failure envelopes shown below allows failure of the rock under stress state Y, but not under stress state X?

Diagram for Geology and Geophysics question 13

Your answerChoose one option.

PP′

QQ′

RR′

SS′

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The maximum and the minimum principal stresses are denoted by

and

, respectively. The differential stress can have an absolute value greater than

when

Your answerChoose one option.

and

are both compressive.

is compressive and

is tensile.

and

are equal.

and

are both tensile.

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The geoid can be best defined as

Your answerChoose one option.

an oblate spheroid that best approximates the shape of the earth.

a surface over which the value of gravity is constant.

the physical surface of the earth.

an equipotential surface of gravity of the earth.

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For a layered isotropic medium with a flat horizontal free surface, match the wave types listed in Group-I with their corresponding polarizations listed in Group II.

Group-I

P. P-waves Q. S-waves R. Rayleigh waves S. Love waves

Group-II

Particle motion is transverse to the direction of wave propagation.

Particle motion is transverse to the direction of wave propagation and is confined to the horizontal plane.

Particle motion is parallel to the direction of wave propagation.

Particle motion is elliptical.

Your answerChoose one option.

P-1; Q-3; R-4; S-2

P-3; Q-1; R-4; S-2

P-3; Q-1; R-2; S-4

P-2; Q-3; R-1; S-4

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A ‘gentle’ fold with an interlimb angle equal to 160° appears tight (apparent interlimb angle equal to 20°) in horizontal section. According to the plunge of the fold axis, it can also be classified as

Your answerChoose one option.

horizontal fold.

gently plunging fold.

steeply plunging fold.

vertical fold.

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The unit of shear modulus (rigidity modulus) is

Your answerChoose one option.

kg m

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With increasing activity of silica, the CORRECT order of appearance of minerals in a weathering environment with constant ratio of activities of K

and H

Your answerChoose one option.

gibbsite → kaolinite → pyrophyllite

gibbsite → pyrophyllite → kaolinite

kaolinite → gibbsite → pyrophyllite

pyrophyllite → gibbsite → kaolinite

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Match the items listed in Group-I with those listed in Group-II.

Group-I

P. Mica Q. Uranium R. Phosphate S. Zinc

Group-II

Beldih

Koderma

Agucha

Gogi

Your answerChoose one option.

P-2, Q-3, R-4, S-1

P-2, Q-4, R-1, S-3

P-4, Q-2, R-3, S-1

P-3, Q-1, R-4, S-2

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GATE GG-1 purpose:exam-prep PYQs

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