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Geology Exam  >  Geology Test  >  IIT JAM Mock Test Series  >  IIT JAM Geology Mock Test - 2 - Geology MCQ

IIT JAM Geology Mock Test - 2 Free Online Test 2026


Full Mock Test & Solutions: IIT JAM Geology Mock Test - 2 (60 Questions)

You can boost your Geology 2026 exam preparation with this IIT JAM Geology Mock Test - 2 (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 - 2 - Question 1
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The erosional process of corrosion is most likely to occur when a river's water is:

IIT JAM Geology Mock Test - 2 - Question 2
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The dimension of dynamic viscosity is:

Detailed Solution: Question 2

Dynamic viscosity, μ = Nsec/m2
= MLT-2 •T / L2
= [ML-1T-1]

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IIT JAM Geology Mock Test - 2 - Question 3
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The hardest mineral in the Moh's scale of hardness is:

IIT JAM Geology Mock Test - 2 - Question 4
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Period corresponding to which of the chronostratigraphic and lithostratigraphic unit:

Detailed Solution: Question 4

IIT JAM Geology Mock Test - 2 - Question 5
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The source rock of Mumbai offshore basin is:-

Detailed Solution: Question 5

Petroliferous basins of India (National Repository, DGH)

IIT JAM Geology Mock Test - 2 - Question 6
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The smallest geochronostratigraphic unit is:-

Detailed Solution: Question 6

IIT JAM Geology Mock Test - 2 - Question 7
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The youngest craton of India is__________

Detailed Solution: Question 7

Eastern Dharwar craton ~2.7Ga

IIT JAM Geology Mock Test - 2 - Question 8
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Oriental beryl is a gem variety of

Detailed Solution: Question 8

Varieties

  • Corundum gemstones include ruby, sapphire, oriental amethyst, oriental emerald and oriental topaz, which are varieties of corundum coloured red, blue, purple, green and yellow respectively.
  • The name corundum includes all ordinary types not of gem quality.
  • Emery is a greyish-black variety of corundum, containing much admixed magnetite and hematite. It is crushed, powdered and sifted, and the powder used for polishing hard surfaces, either as a loose powder or as a surface layer attached to paper (emery paper).

IIT JAM Geology Mock Test - 2 - Question 9
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Which clay is swelling clay?

Detailed Solution: Question 9

This interlayer is montmorillonite or smectite is only hydrated, but it is also expandable, that is, the separation between individual smectite sheets varies with the amount of water present in the soil. Because of this, they are often referred to as "swelling clays".

IIT JAM Geology Mock Test - 2 - Question 10
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Melting of the mantle is not caused by

Detailed Solution: Question 10

The melting in the mantle that produces lavas is primarily caused by the increase in temperature and/or decrease in pressure. This can occur due to processes such as mantle convection, the addition of heat from the Earth's core, or the rise of mantle plumes.

IIT JAM Geology Mock Test - 2 - Question 11
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Roche moutonnées are often aligned in a particular direction. What causes this alignment?

Detailed Solution: Question 11

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IIT JAM Geology Mock Test - 2 - Question 12
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For a volume of 100ml solution MgCl2 = 0.58g, CaSO4 = 0.78g, The hardness of water sample in terms of CaCO3 will be ____ ppm.

Detailed Solution: Question 12


Volume = 100ml = 0.1L
∴ Density of water = 1g/ml → Mass = Volume
∴ Hardness = 610 + 5510 = 11610

IIT JAM Geology Mock Test - 2 - Question 13
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Match Group I with Group II:

Detailed Solution: Question 13

IIT JAM Geology Mock Test - 2 - Question 14
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Which of the following represents a family of directions?

Detailed Solution: Question 14

  • [hkl] represents a direction
  • <hkl> represents a family of directions
  • (hkl) represents a plane.
  • {hkl} represents a family of planes.

IIT JAM Geology Mock Test - 2 - Question 15
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Match Group I with Group II:

Detailed Solution: Question 15

Types of Dentition

  • Taxodont: Hinge line straight with numerous small similar size and shaped teeth, radiating from the center of the valve.
    • E.g. Arcida, Glycymeris.
  • Dysodont: Numerous small similar sized and shaped teeth are placed on the hinge line, and they are seen to radiate from the umbo.
    • E.g. Mytilus.
  • Isodont: Two or three teeth - strong and equal size, seen in each valve on both sides of the central triangular ligamental pit. Teeth and sockets very similar.
    • E.g. Spondylus.
  • Schizodont: Very few, strong, thick and grooved teeth appear to diverge from the umbo towards inside of the valve.
    • E.g. Trigonia.
  • Heterodont: The dentition represents the highest development in Lamellibranchs. The teeth are few in number and are not of uniform size and shape.
    The smaller teeth occurring just below the umbo are known as cardinal teeth, and the other larger teeth away from the umbo either on the posterior and anterior lateral teeth. E.g. Cardita, Venus.
  • Desmodont: True teeth and hinge line are replaced by one or more smooth laminae or ridges. Developed in the higher members.
    • E.g. Ostrea, Gryphaea.

The correct answer is P-3,Q-1,R-4,S-2.

IIT JAM Geology Mock Test - 2 - Question 16
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In Lamellibranchia

Detailed Solution: Question 16

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IIT JAM Geology Mock Test - 2 - Question 17
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Match the following:
NORMAL CLASS ..................... PLANE OF SYMMETRY
(P) galena class........................... (1) 3
(Q) zircon class. .......................... (2) 0
(R) axinite class............................ (3) 9
(S) barite class.............................. (4) 5

Detailed Solution: Question 17

IIT JAM Geology Mock Test - 2 - Question 18
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Andesitic rock form in

Detailed Solution: Question 18

The forces of plate tectonics are responsible for the formation of the Andes. The Nazca plate and a part of the Antarctic plate have been sub-ducting beneath the South American plate, which is a process that continues today and causes earthquakes and volcanic eruptions in the region.
Andesite is a common continental crustal rock formed above the subduction zone.This is formed due to oceanic plate melts during descent into subduction zone to produce a source of magma.
Andesite is fine grained, extrusive igneous rock. it is rich in plagioclase feldspar minerals, it does not contain quartz and olivine

IIT JAM Geology Mock Test - 2 - Question 19
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Modal analysis of framework clast in a rock is as follows:
Quartz - 15%
Feldspar - 83%
Lithic fragments - 2%
Which of the following tectonic setting is most likely to deposit such sedimentary composition?

Detailed Solution: Question 19

Sediments resulting from Continental vs. Magmatic Arc vs. Recycled Orogen

  • Qt = total quartz F = feldspar L = lithic fragments Qm = monocrystalline quartz Lt = total lithic component

W.R.Dickinson's models relating provenance and tectonic provinces

  • This plot, with all quartz counted in Qt, emphasizes the mechanical and chemical stability of each grain type, and the maturity of sediment as it evolves within the various tectonic systems.
  • The two plots are modified from Dickinson and Suczek, 1979, and Dickinson, 1988

IIT JAM Geology Mock Test - 2 - Question 20
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At a depth 2km, the determined in situ stresses in a rock mass are as follows:-
Maximum vertical stress = 40 MPa
Minimum horizontal stress = 15 MPa
Intermediate stress = 20 MPa
If this compressive stress field leads to faulting then possible faults would be:-

Detailed Solution: Question 20

IIT JAM Geology Mock Test - 2 - Question 21
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Which of the following fractures is/are referred to as contractional fractures?

Detailed Solution: Question 21

Extensional fracture: Vein, dike, joint and fissure
Contractional fractures: Stylolite

IIT JAM Geology Mock Test - 2 - Question 22
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The number of lattice points in a body-centered tetragonal unit cell is

Detailed Solution: Question 22

Spaces Lattice

IIT JAM Geology Mock Test - 2 - Question 23
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Match the following geomorphic process with their landforms:

Detailed Solution: Question 23

IIT JAM Geology Mock Test - 2 - Question 24
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Match the following types of stratigraphic unit with their Economic deposits:

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IIT JAM Geology Mock Test - 2 - Question 25
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The combinations of point symmetry and simple translation symmetry gives how many number of space group?

IIT JAM Geology Mock Test - 2 - Question 26
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The reason why a lunar eclipse does not occur at every full moon is

Detailed Solution: Question 26

The reason that we don't have eclipses in every lunar cycle is because the plane of the Moon's orbit around the Earth is actually inclined at an angle with respect to the Ecliptic, or the apparent path the Sun takes during the year.

IIT JAM Geology Mock Test - 2 - Question 27
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Calculate the degree of freedom (F) at point 'x' and 'z'

IIT JAM Geology Mock Test - 2 - Question 28
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What is the name of the rock having both cpx and cpx containing <50% and Olivine containing <50%

Detailed Solution: Question 28

IIT JAM Geology Mock Test - 2 - Question 29
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Biostratigraphy deals with

Detailed Solution: Question 29

Biostratigraphy is the branch of stratigraphy which focuses on correlating and assigning relative ages of rock strata by using the fossil assemblages contained within them.[1] The primary objective of biostratigraphy is correlation, demonstrating that a particular horizon in one

IIT JAM Geology Mock Test - 2 - Question 30
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The aperture of the gastropod shell is covered by a plate known as

Detailed Solution: Question 30

An operculum in the class Gastropoda refers to a protein-based or calcium-based lid that covers the shell opening, known as the shell aperture.

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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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