IIT JAM GEOLOGY 2021
Best of Luck
Q.1 Among the following rocks, the one with highest metamorphic grade is
Q.2 The Earth’s radius is maximum at which one of the following latitudes?
Q.3 The closest value to the percentage of the Earth’s surface covered by the oceans is
Q.4 Which is the shallowest among the marine environments listed below?
Q.5 Among the following, the tungsten-bearing mineral is
Q.6 The host rock of Pb-Zn deposit at Zawar is
Q.7 Bituminous coal deposits in India occur in which one of the following formations?
Q.8 Identify the plant fossil from the following list.
Q.9 The igneous body with dome or mushroom-like shape is known as a
Q.10 Which one of the following stratigraphic units belongs to the Cretaceous?
Q.11 Select the youngest volcanic event out of the following.
Q.12 Which among the following is the only possible plunge for a lineation located on the foliation plane striking 20° N and dipping 40° southeasterly?
Q.13 Which one of the following tectonic plates has the maximum average velocity?
Q.14 A limestone contains lime mud and around 25% allochems, which are separated from each other. The name of the rock as per Dunham’s classification is
Q.15 Find the CORRECT statement out of the following.
Q.16 Which one of the following crystal forms DOES NOT belong to the di-tetragonal pyramidal class?
Q.17 If a coarse-grained igneous rock is composed of >90% of plagioclase and <10% of olivine and pyroxene, then the name of this rock according to the IUGS classification is
Q.18 Which one of the following represents the compositional change in plagioclase during the crystallization of mafic magma?
Q.19 Choose the CORRECT sequence of older to younger formations in the stratigraphy of the Cuddapah Supergroup
Q.20 Match the economic deposits (Group I) with their places of occurrence (Group II).
Group I Group II
P. Iron ore 1. Bhatan
Q. Base metal 2. Sukinda
R. Chromite 3. Rampura-Agucha
S. Uranium 4. Bellary
Q.21 Select the answer that is a CORRECT match for the three types of unconformities. (Grey bands = sediments, [ + ] = igneous rock).
R. Angular Unconformity
Q.22 Which one of the following statements is FALSE?
Q.23 In the context of phylogeny of horses, the CORRECT chronological order from old to young is
Q.24 Choose the CORRECT match between items in Group I with the items in Group II.
|Group I Group II|
P. Polarity zone
Q.25 The following diagram represents the prograde sequence of metamorphic zones that develop during Buchan-type of metamorphism (<4 kbar) of typical pelites. Identify the zones labelled P, Q and R.
Q.26 Match the minerals in Group I with the corresponding composition in Group II.
|Group I |
Q.27 Choose the CORRECT pair of crystal systems that represents the optic orientation shown in the figure. (X,Y,Z are the principal optical vibration directions and a,b,c are the crystallographic axes).
Q.28 Match the environment representing physical geological processes in Group I with the corresponding geomorphic landform/feature in Group II.
|Group I |
4. Natural levee
Q.29 Match the items in Group I with the corresponding items in Group II
|Group I |
R. Monazite placers
1. Supergene enrichment
2. Mechanical accumulation
3. Magmatic crystallization
4. Residual processes
Q.30 Which one of the following statements is FALSE?
Q.31 Fossils from which of the following invertebrate classes show pentameral symmetry?
Q.32 The attitude of the two limbs of a fold was measured as striking 4° N, dipping 85° easterly and striking 30° N, dipping 60° easterly. Which of the following is/are TRUE for describing the geometry of the fold?
Q.33 Which of the following statement(s) is/are CORRECT regarding ophitic texture?
Q.34 On the basis of the following schematic diagram, choose the CORRECT statement(s).
Q.35 A marine organic-rich, black shale with tiny pyrite crystals shows complete absence of body or trace fossils. Which of the following statement(s) is/are TRUE?
Q.36 Which mineral(s) among the following represent(s) AB2O4 composition?
Q.37 Which among the following statement(s) is/are TRUE?
Q.38 Which of the following statement(s) regarding hydrocarbon occurrence is/are CORRECT?
Q.39 Following are the statements regarding types of sandstone as per Pettijohn’s classification. Which is/are the CORRECT statement(s) out of the following?
Q.40 Choose the CORRECT statement(s) out of the following.