Indian Statistical Institute Kolkata Associate Scientist Geology Sample Paper Section II
Sample Questions on Geology for Online Test Scientis ISI Kolkata
Note – For each of the questions there are four suggested answers, of which only one is correct. You will score
4 marks for each correctly answered question,
0 mark for each incorrectly answered questions, and
1 mark for each unattempted question.
Pure albite has less SiO2 by weight% than pure orthoclase. In a perhite exsolved albite lamellac should contain
(a) Same weigth% of silica as the original solid solution
(b) More weight% of silica than the host feldspar
(c) Less weigth% of silica than the hos feldspar
(d) Less weigth% of silica than the original solid solution.
Continental early Triassic deposits of India is devoid of
(a) Coal
(b) Red beds
(c) Sandstones
(d) Dykes and sills
Barapasaurus is a
(a) Theropod dinosaur
(b) Sauropod dinosaur
(c) Ornithopod dinosaur
(d) Peteropod dinosaur
The Andes Mountains of South America are a result of which type of plate boundary?
(a) Convergent
(b) Divergent
(c) Transform
(d) They are not related to a plate boundary
In the given stereogram, if A and B are the poles of the two limbs of a cylinderical fold, then
(a) Fold axial plane dips towards east and the fold axis is horizontal, trending north-south
(b) Fold axial plane dips to west and fold axis is horizontal, trending north-south
(c) Fold axial plane is horizontal and fold axis is vertical
(d) Fold axial plane is vertical and the fold axis plunging towards north
Which of the following best defines a mineral and a rock?
(a) A rock has an orderly, repetitive, geometrical, internal arrangement of minerals; a mineral is a lithified or consolidated aggregate of rocks.
(b) A mineral consists o fits constituent atoms arranged in a geometrically repetitive structure; in a rock the atoms are randomly bonded without any geometric pattern.
(c) In a mineral the constituent atoms are bonded in a regular, repetitive, internal structure; a rock is lithified or consolidated aggregate of different mineral grains.
(d) A rock consists of atoms bonded in a regular, geometrically predictable arrangement; a mineral is a consolidated aggregate of different rock particles.
A 2D circular marker on a rock body has been deformed to become an ellipse having 32 cm and 8 cm as major and minor axes. Assuming volume constant homogeneous rock deformation the radius of the original undeformed marker is
(a) 10 cm
(b) 25 cm
(c) 16 cm
(d) 2.5 cm
In a cross-bedded sandstone the axes of trough cross strata are oriented towards 355 degree, 350, 005, 285, 075, 010 and 0 degree. The mean paleocurrent direction is approximately towards.
(a) 90 degree
(b) 180 degree
(c) zero degree
(d) 235 degree
Stegosaurus are NOT found in Triassic deposists of Spiti area because
(a) Stegosaurus is not found in Triassic
(b) Stegosaurus is terrestrial and Spiti Triassic deposits are marine
(c) Both (a) and (b) makes the occurrence impossible
(d) Stegosaurus is a deep marine swimmer and Triassic deposits of Spiti are shallow marine
The average thickness of the continental crust is about
(a) 35 – 40 km
(b) 100 – 200 km
(c) 1000 – 2000 km
(d) 5- 10 km
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