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CSIR NET Earth Science Exam  >  CSIR NET Earth Science Test  >   Mock Test Series  >  CSIR NET Earth Science Mock Test - 6 - CSIR NET Earth Science MCQ

CSIR NET Earth Science Mock Test - 6 Free Online Test 2026


Full Mock Test & Solutions: CSIR NET Earth Science Mock Test - 6 (150 Questions)

You can boost your CSIR NET Earth Science 2026 exam preparation with this CSIR NET Earth Science Mock Test - 6 (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 CSIR NET Earth Science 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: 150
  • - Analysis: Detailed Solutions & Performance Insights
  • - Sections covered: Part A, Part B, Part C

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CSIR NET Earth Science Mock Test - 6 - Question 1
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The ratio of air's actual water vapour content to its water vapour capacity at a given temperature is called

Detailed Solution: Question 1

Relative humidity is expressed in terms of percentage. It is the ratio of the actual water vapour content of the air to its water vapour capacity at a given temperature.

CSIR NET Earth Science Mock Test - 6 - Question 2
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Direction: In the following question, select the related letters from the given alternatives.
SD : YJ :: HK :?

Detailed Solution: Question 2

We have S + 6 = Y
D + 6 = J
And similarly H + 6 = N
K + 6 = Q
So the correct answer is NQ.

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CSIR NET Earth Science Mock Test - 6 - Question 3
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The depth at which the core layer starts and ends respectively is ____________

Detailed Solution: Question 3

The mantle extends up to the depth of 2900 km and from that depth it is the core that is said to be present and the radius of the Earth is 6371 km and hence the core is said to extend till 6371 km.

CSIR NET Earth Science Mock Test - 6 - Question 4
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At present Earth's perihelion occurs on 3rd January and aphelion occurs on 4th July. Roughly how many years will it take for the perihelion to occur on 4° July.

Detailed Solution: Question 4

The dates of Earth's perihelion and aphelion shift gradually over thousands of years due to the precession of the equinoxes, which has a cycle of about 22,000 years. It takes roughly half of this cycle, or about 11,000 years, for the perihelion to move from its current position in early January to occur around early July. Therefore, it will take approximately 11,000 years for the perihelion to occur near 4th July.

CSIR NET Earth Science Mock Test - 6 - Question 5
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With reference to stratospheric ozone depletion which of the following statements is FALSE?

CSIR NET Earth Science Mock Test - 6 - Question 6
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Glacial-interglacial temperature contrast is the smallest in the equatorial region mainly because

CSIR NET Earth Science Mock Test - 6 - Question 7
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Limestone pavements which are distinctive bare landforms, are usually the result of one of the following processes:

CSIR NET Earth Science Mock Test - 6 - Question 8
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A high vertical wave caused by deep-sea earthquakes is known as:

Detailed Solution: Question 8

A high vertical wave caused by a deep-sea earthquake is known as Tsunami.

The word tsunami is a Japanese word, represented by two characters: tsu, meaning, "harbor", and nami meaning, "wave". These are a series of waves usually generated by the movement of the seafloor.These movements can be caused by different types of geophysical phenomena such as earthquakes, landslides, and volcanic eruptions, etc. The tsunami waves behave very differently in deep water than in shallow water as their speed is related to the water depth.

CSIR NET Earth Science Mock Test - 6 - Question 9
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Which of the following countries is situated oma divergent plate boundary?

CSIR NET Earth Science Mock Test - 6 - Question 10
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The rate of change of sea level was maximum during 

CSIR NET Earth Science Mock Test - 6 - Question 11
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During the process of evaporation, ocean experiences

CSIR NET Earth Science Mock Test - 6 - Question 12
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The average June-September rainfall in India is more

CSIR NET Earth Science Mock Test - 6 - Question 13
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Pyenocline indicates the vertical distribution of:

Detailed Solution: Question 13

Pyenocline indicates the vertical distribution of density.

The region of rapid density change is known as the pycnocline, and it acts as a barrier to vertical water circulation; thus it also affects the vertical distribution of certain chemicals which play a role in the biology of the seas. The sharp gradients in temperature and density also may act as a restriction to the vertical movements of animals.

CSIR NET Earth Science Mock Test - 6 - Question 14
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What is the angle that can be made by fault plane with the horizontal?

Detailed Solution: Question 14

Fault planes may be vertical, horizontal or inclined at any angle with the horizontal.

CSIR NET Earth Science Mock Test - 6 - Question 15
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What is not considered about the shear zones?

Detailed Solution: Question 15

The number, size and inclination of the shear zones should be given top consideration.

CSIR NET Earth Science Mock Test - 6 - Question 16
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The type of joint which can be measured and mapped easily is

Detailed Solution: Question 16

Systematic joints show a distinct regularity in their occurrence which can be measured and mapped easily.

CSIR NET Earth Science Mock Test - 6 - Question 17
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Faults that are developed along bedding planes are

Detailed Solution: Question 17

Sometimes he faults are developed along the bedding planes; in such cases they are aptly called bedding faults.

CSIR NET Earth Science Mock Test - 6 - Question 18
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How does the thickness of the layer affect flexural folding?

Detailed Solution: Question 18

Thickness of the layers and nature of the contact are important factors on which the amount of slip depends. Thicker the layer, greater is the slip.

CSIR NET Earth Science Mock Test - 6 - Question 19
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Total field magnetic amomalies ΔF due to spherical are bodies satisfy the differential equation

where z is the depth to the centre of the sphere. A sphere of very large magnetic susceptibility K is inductively magnetized in the earth's magnetic field at the magnetic latitude of sin-1 '1/√3) and generates a maximum anomaly of 300 gammas in the total field. where the total field decreases with elevation at a rate of i.0 gamma/meter, and the vertical component of the anomaly is zero.

The anomaly in the horizontal component, where the vertical component anomaly is zero, 18

CSIR NET Earth Science Mock Test - 6 - Question 20
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A vertical loop fixed transmitter electromagnetic survey was carried out to map a possible thin vertical conductor of resistivity I Ω m embedded in a host rock of resistivity-(10002m).

The frequency you recommend for this survey is

CSIR NET Earth Science Mock Test - 6 - Question 21
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Consider an imaginary earth model of thick fluid core surrounded by a thick mantle and thin or no crist. The density in the mantle increases from 3.0 gm/cc at the surface to 5.0 gm/cc at the core -mantle boundary, and it abruptly increases to 10.0 gm/cc in the care. The velocity of the P wave, increase from 3.0 km/sec to 8.0 km/sec in the mantle, and is abruptly falls to 4.0 km/sec in the core. Direct P waves omanating from an earthquake at angles of incidence less than sin-3(3/16) cannot be received anywhere on the earth's surface. Further the time of arrival of the P wave increases at a rate of 250 sec/radian prior to the onset of shadow zone,

Which phase of the P-wave is not at all recorded on the earth's surface

CSIR NET Earth Science Mock Test - 6 - Question 22
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What would be the expected geochemical trend with increasing rainfall as per the diagram above?

CSIR NET Earth Science Mock Test - 6 - Question 23
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A vertical loop fixed transmitter electromagnetic survey was carried out to map a possible thin vertical conductor of resistivity I Ω m embedded in a host rock of resistivity-(1000 Ω m).
Consider the following situations in the above survey:
situation 1: The trammitter and receiver are on the same side of the conductor
Situation 2: The transmitter is an one side of the conductor and the receiver is just above the conductor
The coupling coefficients in these situations will be

CSIR NET Earth Science Mock Test - 6 - Question 24
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Oceanic lithosphere cools and thickens as a function of age away from mid occanic ridge and it is represented by cooling half-space model. If its thickness at 10 Ma is 10 km, what will be its thickness at 40 Ma?

CSIR NET Earth Science Mock Test - 6 - Question 25
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As per Koppen's classification of climate, the following is correct:

CSIR NET Earth Science Mock Test - 6 - Question 26
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With regard to Cenozoic deep sea sedimentary records, biostratigraphy is studied with the help of

CSIR NET Earth Science Mock Test - 6 - Question 27
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In a weathering profile, saprolite occurs

CSIR NET Earth Science Mock Test - 6 - Question 28
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You are required to solve for the root of the equation x3 -2x2 + 4x -1 = 0 in the limits (0 and 1) by the method of false position. The inference you obtain at the end of the 1st iteration is

CSIR NET Earth Science Mock Test - 6 - Question 29
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Diagrarms A, B, C and D illustrate principal kinds of biozones. The comect sequence is:

CSIR NET Earth Science Mock Test - 6 - Question 30
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The lowest temperature at which partial melting occurs in a rock system is a function of:

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About this CSIR NET Earth Science Mock Test

This mock test contains 150 questions designed to replicate the pattern, difficulty level and time pressure of the actual CSIR NET Earth Science exam. It is part of CSIR NET Earth Science Mock Test Series on EduRev, covering all the topics that are being asked as per the current CSIR NET Earth Science 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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