GATE GG-1 kind:question PYQs & Answers — Page 13

Questions 121–130 of 650. Imported answers require independent review unless marked reviewed.

Which of the following options is/are correct for movement of warm-base glaciers?

Your answerSelect all correct options. You can choose more than one.

Movement is dominated by basal sliding

Internal deformation involving slippage within and between ice crystals leads to glacial movement

Internal deformation is governed by shear stress following Power Law

Vertical profile of glacier flow velocity is maximum at the base and decreases upwards

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Choose the correct option(s) that describe(s) the properties of clay minerals.

Your answerSelect all correct options. You can choose more than one.

Kaolinite is two-layered

Illite is two-layered

Montmorillonite is two-layered

Montmorillonite swells in contact with water

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Which of the following statements is/are correct for electromagnetic (EM) radiation?

Your answerSelect all correct options. You can choose more than one.

At room temperature, natural objects emit EM radiation

Blackbody radiation is proportional to square of the absolute temperature of the body

Wien’s displacement law provides the dominant wavelength of EM emission

EM energy decreases with increase in wavelength

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Which of the following options can be linked to rise in CO₂ concentration in the atmosphere?

Your answerSelect all correct options. You can choose more than one.

Rise in seawater pH and sea surface temperature

Decrease in seawater pH and increase in bicarbonate ion concentration in seawater

Warming of surface ocean water and decrease in bicarbonate ion concentration in seawater

Decrease in seawater pH and decrease in bicarbonate ion concentration in seawater

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A sediment core of 4 cm diameter and 35.81 cm height was collected. This core had an initial weight of 1000.00 g and upon drying the sediment, the weight decreased by 133.75 g. This core has a void ratio of 0.4257, where void ratio is defined as the ratio of volume of void to the volume of solid (Vᵥ/Vₛ). The average density of the sediment in the core is _____ g/cm³.

(Round off to two decimal places)

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On a normal fault plane dipping 60° towards east, the measured heave and throw are 5 m and 12 m, respectively. If the strike-slip component of the fault is 13 m, the magnitude of true displacement of the fault is __________ m.

(Round off to one decimal place)

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In the isochemical phase diagram shown below, the curved arrow represents the P-T path. The variance at peak metamorphism is __________

Diagram for Geology and Geophysics question 62

(Answer in integer)

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A 3×3 image (Image A) has been linearly stretched to get the maximum contrast in an 8-bit display system. Digital Number (DN) values of the pixels in Image A are shown. The value of the pixel marked as ‘?’ in the output Image B after linear stretching is __________.

Diagram for Geology and Geophysics question 63

(Answer in integer)

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Th and

Ra are intermediate nuclides in the decay series of

U to

Pb. The half-lives of

Th, and

Ra are 4.47 billion years, 75,000 years, and 1600 years, respectively. At secular equilibrium, when activities are equal, 10 billion atoms of

U are present. The number of atoms of

Ra present at equilibrium is __________. (Answer in integer)

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The following table provides the mineral chemistry of a garnet. All oxides are in weight percentage and cations in atoms per formula unit. Total oxygen is taken as 12 based on the ideal garnet formula. Consider Fe as Fe

and Fe

= 0. The X

of this garnet is __________.

Oxides	Wt %	Cations	apfu
SiO	39.51	Si	2.998
TiO	0.05	Ti	0.003
Al O	22.35	Al	1.999
Cr O	0.00	Cr	0.000
FeO	26.25	Fe	1.66
MnO	0.00	Mn	0.000
MgO	10.80	Mg	1.21
CaO	1.40	Ca	0.114
Na O	0.00	Na	0.000
K O	0.00	K	0.000
Total	100.36	Total cation	8.01

(Round off to three decimal places and do not multiply by hundred)

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GATE GG-1 kind:question PYQs

Question 56

Question 57

Question 58

Question 59

Question 60

Question 61

Question 62

Question 63

Question 64

Question 65