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Geology Exam  >  Geology Test  >  IIT JAM Mock Test Series  >  IIT JAM Geology Mock Test - 3 - Geology MCQ

IIT JAM Geology Mock Test - 3 Free Online Test 2026


Full Mock Test & Solutions: IIT JAM Geology Mock Test - 3 (60 Questions)

You can boost your Geology 2026 exam preparation with this IIT JAM Geology Mock Test - 3 (available with detailed solutions).. This mock test has been designed with the analysis of important topics, recent trends of the exam, and previous year questions of the last 3-years. All the questions have been designed to mirror the official pattern of Geology 2026 exam, helping you build speed, accuracy as per the actual exam.

Mock Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 180 minutes
  • - Total Questions: 60
  • - Analysis: Detailed Solutions & Performance Insights
  • - Sections covered: Section A

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IIT JAM Geology Mock Test - 3 - Question 1
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The chronostratigraphic rank immediately lower than series is ____

Detailed Solution: Question 1

Chronostratigraphy unit

  • Eonothem
  • Erathem
  • System
  • Series
  • Sub-series
  • Stage
  • Sub-stage
  • Zone

IIT JAM Geology Mock Test - 3 - Question 2
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Which one of the following brachiopod attached to rock by one valve?

Detailed Solution: Question 2

Productus: Spine attached
Strophalosia: Spine
Terebratula: Pedicle
Crania: One valve

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IIT JAM Geology Mock Test - 3 - Question 3
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Bijli Rhyolites is characteristics of:

Detailed Solution: Question 3

IIT JAM Geology Mock Test - 3 - Question 4
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Which of the following option is correctly depicting increasing wavelength?

Detailed Solution: Question 4

IIT JAM Geology Mock Test - 3 - Question 5
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Fluorite shows which of the following twinning

IIT JAM Geology Mock Test - 3 - Question 6
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In the given diagram which point has the maximum erosive potential for causing the flood?

Detailed Solution: Question 6

IIT JAM Geology Mock Test - 3 - Question 7
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Malaniakhand Granite host:

IIT JAM Geology Mock Test - 3 - Question 8
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_____ is the phenomenon in which substances having the same chemical composition differ from one another by some physical properties like crystal system, hardness density.

IIT JAM Geology Mock Test - 3 - Question 9
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Blind valley is found in

Detailed Solution: Question 9

The Blind valley is found in the karst region. Karst topography is a geological formation shaped by the dissolution of a layer or layers of soluble bedrock, usually carbonate rock such as limestone or dolomite, but also in gypsum.

IIT JAM Geology Mock Test - 3 - Question 10
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A specialized form of concordant igneous intrusion that is characterized by a dome in the country rock and a nearly planar floor is called a:

Detailed Solution: Question 10

Laccoliths are lens-shaped and normally 1-2 km at the thickest. They have a planar base but a domed upper surface, above which the country rocks are arched up.

IIT JAM Geology Mock Test - 3 - Question 11
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Match Group I with Group II:

Detailed Solution: Question 11

IIT JAM Geology Mock Test - 3 - Question 12
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Which of the following minerals is not present in buchan facies series?

IIT JAM Geology Mock Test - 3 - Question 13
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Select the correct sequence of thrust from south to north of the Himalayan Thrust system:

Detailed Solution: Question 13

IIT JAM Geology Mock Test - 3 - Question 14
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An aquifer has an average thickness of 25 m and its hydraulic conductivity is 10 m/day. Calculate the transmissivity of the formation?

Detailed Solution: Question 14

Given,
b = 25 m
K = 10 m/day
We know,
T = Kb = 10 × 25 = 250 m2/day

IIT JAM Geology Mock Test - 3 - Question 15
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Match the following:

Detailed Solution: Question 15

IIT JAM Geology Mock Test - 3 - Question 16
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Consider the following statements w.r.t., binary peritectic system:
Statement 1: At high pressure there is two peritectic point
Statement 2: At high pressure, the peritectic point shifts towards right of Enstatite and changes into an eutectic point

Detailed Solution: Question 16

Pressure Effects
Different phases have different compressibilities

  • Raises melting point
  • Shift eutectic position (and thus X of first melt, etc.)

The system Fe–SiO2 at atmospherice pressure and1/2 G12. After Bowen and Schairer (1935), Am. J. Sci., Chen and Presnall 1975, Am. Min.

IIT JAM Geology Mock Test - 3 - Question 17
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The fossil fuel with highest H/C ratio is:

Detailed Solution: Question 17

 The average hydrogen/carbon ratios show that the degree of unsaturation increases from natural gas through petroleum to coal. The amount of carbon dioxide released per mole also increases as the amount of unsaturation increases. Since carbon dioxide is a greenhouse gas, from this data, it would appear that burning coal would have a larger greenhouse effect than burning natural gas.

IIT JAM Geology Mock Test - 3 - Question 18
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Two planets A and B orbit around their Sun, B being 9 times farther away than A from their Sun. Then the length of the year on B compared to that A, would be

Detailed Solution: Question 18

The orbital period (year) of a planet is determined by its distance from the Sun according to Kepler's third law of planetary motion. Kepler's law states that the square of the orbital period of a planet is directly proportional to the cube of its semi-major axis (average distance from the Sun).
Applying Kepler's 3rd law
T2 ∝ a3
Tₐ2 / Tᵦ2 = a3 / (9a)3Tₐ2 / Tᵦ2 = a3 / 729a3   ⇒   729 Tₐ2 = Tᵦ2

27 Tₐ = T

IIT JAM Geology Mock Test - 3 - Question 19
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Match Group I with Group II:

Detailed Solution: Question 19

IIT JAM Geology Mock Test - 3 - Question 20
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Match the lattices with their crystal systems.

Detailed Solution: Question 20

7 Crystal Systems and 14 Bravais Lattices


P: Simple
I: Body-centred
F: Face-centred
C: End-centred

IIT JAM Geology Mock Test - 3 - Question 21
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Match rock with their characteristic mineral assemblage:

Detailed Solution: Question 21

IIT JAM Geology Mock Test - 3 - Question 22
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The volcanic equivalent of feld-Gabbro is:

IIT JAM Geology Mock Test - 3 - Question 23
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Match the following stratigraphic units with their corresponding age:

Detailed Solution: Question 23

IIT JAM Geology Mock Test - 3 - Question 24
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Magnetite shows:

IIT JAM Geology Mock Test - 3 - Question 25
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The correct pair of metal and the ore mineral is:

Detailed Solution: Question 25

Magnesium – Kieserite
Antimony – Cervantite
Lithium – Amblygonite
Uranium – Autunite

IIT JAM Geology Mock Test - 3 - Question 26
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A slickenside present on a vertical plane is perpendicular to the strike of the plane. The representation of the slickenside on stereographic net is ________.

IIT JAM Geology Mock Test - 3 - Question 27
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At approximately what depth olivine can transform to Perovskite & Magnesiowustite?

Detailed Solution: Question 27

The strong control that the endothermic phase change from spinel to perovskite and magnesiowustite at a depth of 660 km has on mantle convection is discussed.

IIT JAM Geology Mock Test - 3 - Question 28
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The time equivalent of the time-stratigraphic term 'System' is

Detailed Solution: Question 28

IIT JAM Geology Mock Test - 3 - Question 29
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What is the usual order, first to last, for the precipitation of the following evaporite minerals from concentrated seawater?

IIT JAM Geology Mock Test - 3 - Question 30
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A bivalve shell having pallial sinus indicates its:

Detailed Solution: Question 30

Pallial sinus basically indicates infaunal habitat that is when the the foot and muscle rest after digging it gives a impression or line that’s the pallial sinus.

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About this Geology Mock Test

This mock test contains 60 questions designed to replicate the pattern, difficulty level and time pressure of the actual Geology exam. It is part of IIT JAM Geology Mock Test Series on EduRev, covering all the topics that are being asked as per the current Geology syllabus. Attempting this test under timed conditions will help you assess your exam readiness, identify subject-wise weak areas, and improve your speed and accuracy before the actual exam.

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If you found this IIT JAM Geology Mock Test - 3 helpful, you can further enhance your Geology preparation with complete mock tests, previous year questions & practice tests available in IIT JAM Geology Mock Test Series course on EduRev. The course offers:
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