Free Online IOCL Earth Science,Geology Question Paper
Geology MCQ Sample IOCL Test
Q.1: When the strike of the fault is parallel to the strike of the rock-beds, the fault is called
(a) Strike fault.
(b) Strike-slip fault.
(c) Dip-slip fault.
(d) Diagonal fault.
Answer. (a)
Q.2: When maximum stress is vertical and mean and minimum stresses are horizontal, then
the resulted fault is:
(a) Normal fault.
(b) Reverse fault.
(c) Strike-slip fault.
(d) Nappe.
Answer. (a)
Q3: When the Greatest principal strain Axis is vertical and the Intermediate and least
principal strain Axes are horizontal, then the resulting fault is:
(a) Normal fault.
(b) Thrust fault.
(c) Overthrust fault.
(d) Both Normal and reverse faults.
Answer. (a)
Q.4: Shorting of bed takes place generally in the case of:
(a) Strike-slip fault.
(b) Normal fault.
(c) Reverse fault.
(d) Dip-slip fault.
Answer. (c)
Q.5: When the tensile stress at grain boundary exceeds the local tensile strength of material
failure occurs, stated by:
(a) Mohr’s theory of failure.
(b) Coulomb’s theory of failure.
(c) Griffith’s theory of failure.
(d) None of the above.
Answer. (c)
Q.6: Which of the following feature indicate faulting:
(a) Slicken sides.
(b) Grooves.
(c) Breccia.
(d) All the above.
Answer. (d)
Q.7: ‘Fault drag’ is:
(a) Striation on fault plane.
(b) Curvature of layering adjacent to faults.
(c) Breccia on fault plane.
(d) Tilting of faulting blocks.
Answer. (c)
Q.7: In case of transform fault:
(a) Dip-slip and strike slip are equal.
(b) Dip-slip is equal and net slip is of any value.
(c) Dip-slip is zero and the net slip is also zero.
(d) Dip-slip is zero and the net slip is equal to strike slip.
Answer. (d)
Q.8: In mural jointing, how many sets of joints are found:
(a) One set of joints.
(b) Two sets of joints.
(c) Three sets of joints.
(d) Four sets of joints.
Answer. (c)
Q.9: Conjugate joints are often considered as:
(a) Tension fractures.
(b) Shear fractures.
(c) Compression fractures.
(d) Both tension and compression fractures.
Answer. (b)
Q.10: What are cleats:
(a) Joints in igneous rocks
(b) Joints in coal.
(c) Joints on fault plane.
(d) Folded coal seams.
Answer. (b)
Q.11: ‘Plumose marking’ associated with:
(a) Folds.
(b) Faults.
(c) Joints.
(d) Anticline fold.
Answer. (c)
Q.12: An unconformity shows:
(a) Difference in composition.
(b) Difference in structures.
(c) Difference in Ages.
(d) Difference in locations.
Answer. (c)
Q.13:The coulomb theory of failure is related to the:
(a) Shear stress.
(b) Shear stress and shear strength.
(c) Tensile strength.
(d) Compressive strength.
Answer. (b)
Q.14: A relatively raised block due to relative uplift along the normal faults is:
(a) Horst.
(b) Graben.
(c) Trough.
(d) Dome.
Answer. (a)
Q.15: Main Boundary fault extends from Punjab to Assam throughout the extension of the
outer Himalayas is a:
(a) Normal fault.
(b) Step fault.
(c) Reverse fault.
(d) Parallel fault.
Answer. (c)
Q.16: ln which fault one block appears to have rotated about a point on the fault plane:
(a) Arcuate fault.
(b) Bedding fault.
(c) Enechelon fault.
(d) Pivot or hinge fault.
Answer. (d)
Q.17: What is the rake of the net-slip in dip-slip fault:
(a) O°.
(b) 90°.
(c) Between 0° to 90°
(d) 180°.
Answer. (b)
Q.18: Reverse faults result when:
(a) Maximum stress is vertical.
(b) Mean stress is vertical.
(c) Minimum stress is vertical.
(d) Maximum and mean stresses are vertical.
Answer. (c)
Q.19: In transcurrent fault the movements is in:
(a) Vertical direction.
(b) Horizontal direction.
(c) Oblique direction.
(d) Any direction.
Answer. (b)
Q.20: Extension joints are:
(a) Joints perpendicular to the axes of folds.
(b) Joints parallel to the axes of folds.
(c) Joints associated with faulting.
(d) Joints associated with inclined bedding planes.
Answer. (a)
Q.21: Columnar joints are:
(a) Compressional joints.
(b) Tensile joints.
(c) Shear joints.
(d) Both compressional and Tensional joints.
Answer. (b)
Q.22: Regarding angular unconformity which statement is correct:
(a) The younger beds are sedimentary while the older beds are igneous.
(b) The younger beds are sedimentary while the older beds are metamorphic.
(c) Both the younger and older beds are sedimentary.
(d) None of these are correct.
Answer. (c)
Q.23: In which type of unconformity, the older rocks are of plutonic origin:
(a) Angular unconformity.
(b) Disconformity.
(c) Non conformity.
(d) Local unconformity.
Answer. (c)
Q.24: When younger beds completely cover up the underlying rocks, the resulted structure is
known as:
(a) Over step.
(b) Over lap.
(c) Off-lap.
(d) On-lap
Answer. (b)
Q.25: ‘Klippe’ is a:
(a) Nappe outlier.
(b) Nappe inlier.
(c) Window.
(d) Hogback.
Answer. (a)
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