Geology and Geophysics
GATE GG-1 exam:gate PYQs
Build your understanding with focused practice from past exam papers.
Questions 171–180 of 650. Imported answers require independent review unless marked reviewed.
Question 41
Open questionGGMSQ1 markNeeds review
Which of the following statements is/are CORRECT?
Your answerSelect all correct options. You can choose more than one.
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Open questionGGNAT1 markNeeds review
Consider the solubility product of barite (BaSO₄) at 25 °C and 1 bar to be 10⁻¹⁰. If the activities of Ba²⁺ and SO₄²⁻ ions are 0.5 × 10⁻⁵ and 10⁻ˣ, respectively, then the absolute value of ‘X’ is ________ (rounded off to one decimal place).
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Open questionGGNAT1 markNeeds review
The support pressure of 20 kPa is required to stabilize the lose blocks of the Excavation Disturbed Zone (EDZ) at the crown of a circular tunnel with horizontal axis. The EDZ is to be stabilized by inserting rock bolts vertically into the roof. If the working capacity of a bolt is 160 kN, the area of the roof supported by a single bolt in m² is __________ (in integer).
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Open questionGGNAT1 markNeeds review
The areas of drainage basins A and B are 25 km² and 50 km², respectively. The total length of drainages of all orders in basin A is 20 km. If both the basins have the same drainage density, the total length of drainages of all orders in basin B in km is __________ (in integer).
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Open questionGGMCQ2 marksNeeds review
Match the stratigraphic units in Group–I with the sedimentary basin in Group–II.
Group–I
P. Ramgundam Sandstone
Q. Raipur Formation
R. Bagalkot Group
S. Sonia Sandstone
Group–II
Chhattisgarh
Kaladgi
Marwar
Godavari
Your answerChoose one option.
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Which one of the following openings is a type of decline in underground mines?
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Open questionGGMCQ2 marksNeeds review
Which one of the following optic signs is CORRECT for a mineral with the given centered optic axis figure?
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Open questionGGMCQ2 marksNeeds review
Match the following invertebrates in Group–I with their morphological features in Group–II.
Group–I
P. Trilobite
Q. Brachiopod
R. Bivalve
S. Echinoid
Group–II
Periopt
Hypostome
Deltidial plate
Lunule
Your answerChoose one option.
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Open questionGGMCQ2 marksNeeds review
During high-temperature metamorphism of pelites, which one of the following mineral reactions represents the second sillimanite isograd?
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Open questionGGMCQ2 marksNeeds review
Which one of the following represents deviatoric stress in a 2D stress Mohr Circle?
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