Geology and Geophysics
GATE GG-1 year:2023 PYQs
Build your understanding with focused practice from past exam papers.
Questions 41–50 of 65. Imported answers require independent review unless marked reviewed.
Question 41
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The amount of Fe in a sample of 25 g of pyrrhotite (FeS) is __________ g. (Atomic wt. of Fe = 55.85 and S = 32.06) [round off to 2 decimal places]
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The rate of spreading about a symmetric spreading center at the middle of a 4000 km wide sea is 40 mm/year. The spreading began _______ million years before present. [in integer]
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A vertical aerial photograph is obtained over flat terrain with a 30 cm focal-length camera lens from an altitude of 1828 m. If the width of a dolerite dyke on this vertical photograph is 2 mm, its actual width on the terrain is __________ m. [round off to 2 decimal places]
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The decay constant of a radioactive isotope is 1.21 × 10⁻⁴ year⁻¹. The half-life of the isotope is _______________ years. [round off to nearest integer]
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The given outcrop pattern on a flat topography represents
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Match the following fossil taxa in Group I with their corresponding features in Group II.
Group I Group II
P. Bryozoa 1. Denticles
Q. Ostracoda 2. Chamber
R. Foraminifera 3. Carapace
S. Conodont 4. Zooid
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In the given schematic diagram, cross beds are exposed on a vertical rock face. The feature XY (bold line) represents a/an
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The schematic diagram represents thin section of a carbonate rock. The type of cement formed by large calcite crystals is known as
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Based on the three statements given below, choose the CORRECT option.
Statement I: Echinoids have water vascular system.
Statement II: Delthyrium and pedicle foramen are found in the brachial valve of brachiopods.
Statement III: Cardinal teeth, adductor muscles and chondrophore are found in bivalves.
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The total number of symmetry elements in the crystal class represented by the point group 4/m\bar2/m is
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