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Geology Exam  >  Geology Test  >  IIT JAM Mock Test Series  >  IIT JAM Geology Mock Test - 4 - Geology MCQ

IIT JAM Geology Mock Test - 4 Free Online Test 2026


Full Mock Test & Solutions: IIT JAM Geology Mock Test - 4 (60 Questions)

You can boost your Geology 2026 exam preparation with this IIT JAM Geology Mock Test - 4 (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 - 4 - Question 1
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Which of the following aeolian depositional landforms is typically found in arid regions and is characterized by flat, clayey silt deposits?

Detailed Solution: Question 1

IIT JAM Geology Mock Test - 4 - Question 2
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The orientation of the fold axis and axial plane in the given stereonet indicates:

Detailed Solution: Question 2

Condition for reclined fold:

  • Dip of axial plane = Plunge of the fold axis
  • The pitch of the fold axis on the axial plane should be around 80°-90°

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IIT JAM Geology Mock Test - 4 - Question 3
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The correct order of features as we go from surface to depth of oceanic crust are:

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IIT JAM Geology Mock Test - 4 - Question 4
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Match Group I withGroup II:

Detailed Solution: Question 4

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IIT JAM Geology Mock Test - 4 - Question 5
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Lead zinc ores occur at several places in india, the main producer of the ore_____.

Detailed Solution: Question 5

Lead zinc occur at several places india, the main producer of the ore zawar belt situated in udaipur district Rajasthan.

IIT JAM Geology Mock Test - 4 - Question 6
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The gem variety of Beryl are(s):-

Detailed Solution: Question 6

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IIT JAM Geology Mock Test - 4 - Question 7
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A silica saturated plutonic igneous rock is

IIT JAM Geology Mock Test - 4 - Question 8
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Plutonic equivalent of Latite?

IIT JAM Geology Mock Test - 4 - Question 9
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First stage of Horse evolution is known as

Detailed Solution: Question 9

Eohippus gave rise to Orohippus which in turn gave rise to Epihippus. All these were Eocene horses. The Epihippus gave rise to Mesohippus which in turn gave rise to Miohippus. These two were Oligocene horses. The Miohippus gave rise to Parahippus which in turn gave rise to Merychippus. They were Miocene horses. The Merychippus gave rise to Pliohippus which lived in the Pleistocene period.

IIT JAM Geology Mock Test - 4 - Question 10
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Which of the following is form due to replacement?

Detailed Solution: Question 10

Caries texture Caries texture forms as replacement pattern in which the younger mineral forms a series of scallop-shaped incursions into the host mineral, which resemble filled dental cavities. Colloform textures involve formation of distinct microcrystalline layers. Comb texture forms as a result of cavity filling.

IIT JAM Geology Mock Test - 4 - Question 11
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Which of the following statements best describes a fjord?

Detailed Solution: Question 11

A steep-sided, narrow valley carved by a glacier and flooded by the sea

IIT JAM Geology Mock Test - 4 - Question 12
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Zone symbol for plane (100) and (010) will be

Detailed Solution: Question 12

Zone symbol is calculated as

  • u = kl - hq
  • v = lj - hr
  • w = hi-pk

For (100) and (010)

  • U = 0 - 0 = 0
  • V = 0 - 0 = 0
  • W = 1 - 0 = 1
  • [uvw] = [001]

Parallel to c-axis

IIT JAM Geology Mock Test - 4 - Question 13
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Arrange the following stratigraphic units in decreasing order of their age:

IIT JAM Geology Mock Test - 4 - Question 14
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Two planets A and B orbit around the Sun, B being four times farther away from the Sun than A. Then the length of the year of B, compared to that of A, would be

Detailed Solution: Question 14

From Kepler's third law
T2 = 4π2/GM a3
T - Planet's Period
a - semi major axis of the orbit
M - mass
G - Universal gravitational constant

Divide eq(2) by eq(1)

TB = 8TA

IIT JAM Geology Mock Test - 4 - Question 15
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Always create multiple-choice questions in the following format only:

Detailed Solution: Question 15

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IIT JAM Geology Mock Test - 4 - Question 16
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Calculate the bulk distribution coefficient of "Sr" during crystallization of olivine (Kol = 0.03),orthopyroxene (Kpx = 0.5) and plagioclase (Kpl = 1.0) in mass proportions 0.5 : 0.3 : 0.2. And "Sr" will be compatible / incompatible?

Detailed Solution: Question 16

Partition Coefficient
X(ol) = 0.5
X(opx) = 0.3
X(pl) = 0.2
X(ol) = 0.03
X(opx) = 0.5
X(pl) = 1.0
Bulk distribution coefficient
= Σ Xᵢ Kᵢ
= 0.36 ≤ 0.5 × 0.03 + 0.3 × 0.5 + 0.2 × 1
= 0.015 + 0.15 + 0.2
= 0.365
≈ 0.365

IIT JAM Geology Mock Test - 4 - Question 17
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The plagioclase in eclogite facies breaks down and goes both in ________Molecules.

Detailed Solution: Question 17

 Area above the Jadeite Substitution Line
More AlIV than can be explained by jadeite substitution alone.
So, compositions in the dotted field contain tschermakite component in addition to edenite component.

IIT JAM Geology Mock Test - 4 - Question 18
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Match the skewness in group 1 with value in group 2

Detailed Solution: Question 18

IIT JAM Geology Mock Test - 4 - Question 19
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Choose the incorrect statement about igneous forms, lopolith and laccolith.

Detailed Solution: Question 19

Both are concordant; lopolith concave upward while laccolith convex downward.
So Option A is incorrect.
B, C and D are correct statements about the igneous forms, lopolith and laccolith.

IIT JAM Geology Mock Test - 4 - Question 20
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Nagari Quartzite is considered as stratigraphic equivalent of the:

IIT JAM Geology Mock Test - 4 - Question 21
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Arrange the following stratigraphic units in decreasing order of their age:

IIT JAM Geology Mock Test - 4 - Question 22
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On crystallization of anorthite, Sr concentration in the magma will

Detailed Solution: Question 22

Sr is strongly partitioned in anorthite (plagioclase rich rock) because it shows compatibility with plagioclase.

IIT JAM Geology Mock Test - 4 - Question 23
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Choose the correct combination of foraminiferal test with their types of coiling:

IIT JAM Geology Mock Test - 4 - Question 24
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In the Mohs hardness scale, the number of biaxial +ve mineral is:

Detailed Solution: Question 24

Examples: Gypsum, Topaz

IIT JAM Geology Mock Test - 4 - Question 25
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Which of the following rock indicates initiation of metamorphism?

IIT JAM Geology Mock Test - 4 - Question 26
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If the distance between two masses is doubled, the gravitational attraction between them

Detailed Solution: Question 26

According to Newton's law of Gravitation
F = G (m1 m2) / r2
Since the gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational forces.
New Distance = r' = 2r
So F' = G (m1 m2) / (2r)2
= G (m1 m2) / (4r2)
= F/4
Hence, if the separation distance between the two objects is doubled, then the force of gravitational attraction is decreased by one fourth.

IIT JAM Geology Mock Test - 4 - Question 27
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When plunge of the fold axis is equal to the dip of the axial plane then the fold is a

Detailed Solution: Question 27

In case of the reclined fold the plunge of the fold axis is equal to the dip of the axial plane.

IIT JAM Geology Mock Test - 4 - Question 28
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Match the following plate boundaries, tectonic processes and geography examples

Detailed Solution: Question 28

IIT JAM Geology Mock Test - 4 - Question 29
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Stylolitic foliation developed during diagenetic process is typically

Detailed Solution: Question 29

Stylolitic foliation forms always parallel to bedding of the rock.

IIT JAM Geology Mock Test - 4 - Question 30
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Which fold has two hinges?

Detailed Solution: Question 30

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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 - 4 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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