GATE GG-1 format:mcq PYQs & Answers — Page 35

Questions 341–350 of 422. Imported answers require independent review unless marked reviewed.

Topic practice 422 questionsPage 35 of 43

Pascal second is a unit of

Your answerChoose one option.

seepage force.

dynamic viscosity.

kinematic viscosity.

permeability.

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Which one of the following statements is CORRECT?

Your answerChoose one option.

Strength of a rock decreases with increase in confining pressure.

Strength of a rock increases with increase in temperature.

Strength of a rock increases with increase in strain rate.

Strength of a rock increases with increase in pore water pressure.

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The geomorphic feature ‘horns’ are formed by

Your answerChoose one option.

wind erosion.

river erosion.

wind deposition.

glacial erosion.

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A melanocratic porphyric rock containing phenocrysts of biotite, with feldspar restricted to the groundmass, is called

Your answerChoose one option.

trachyte.

dacite.

andesite.

lamprophyre.

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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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GATE GG-1 format:mcq PYQs

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