CE-405 Engineering Geology & Remote Sensing - Dec 2024 Question Paper

Under each question, How to answer lists the points an answer should cover, outlined by CampusPrep from the syllabus. Check the details against your textbook.

1. 7 Marks
   aExplain the consequences of disintegration and decomposition of rock. How they deteriorate the virtues of rocks from civil engineering point of view?
   How to answer

   • Define disintegration (mechanical) vs decomposition (chemical) weathering
   • List consequences: loss of strength, increased porosity/permeability, reduced durability
   • Explain deterioration of engineering virtues: bearing capacity, stability, workability
2. 7 Marks
   bDefine weathering, erosion and denudation.
   How to answer

   • Define weathering
   • Define erosion
   • Define denudation and distinguish the three
3. 7 Marks
   aDefine crystals. Explain the characteristics of crystals.
   How to answer

   • Define crystal / crystalline matter
   • Characteristics: plane faces, definite geometry, symmetry, cleavage, anisotropy
   • Crystal systems / interfacial angle constancy
4. 7 Marks
   bWrite the physical properties, uses, chemical composition of the following minerals:

   1. i)Quartz
   2. ii)talc
   How to answer

   • Quartz: SiO2, hardness 7, physical properties and uses
   • Talc: hydrated magnesium silicate, hardness 1, properties and uses
   • Chemical composition formulas for both
5. 7 Marks
   aGive an account of classification of sedimentary rocks.
   How to answer

   • Define sedimentary rocks
   • Classification basis: clastic, chemical, organic
   • Examples of each group with formation
6. 7 Marks
   bDistinguish the following :

   1. i)Shale and Slate
   2. ii)Limestone and Marble
   How to answer

   • Shale vs Slate: sedimentary vs metamorphic, hardness, cleavage, uses
   • Limestone vs Marble: sedimentary vs metamorphic, texture, reaction, uses
   • Tabular comparison of origin, composition, engineering significance
7. 7 Marks
   aWrite a short note on : Recurrence of faulting
   How to answer

   • Define fault recurrence / reactivation
   • Causes: tectonic stress, isostatic adjustment
   • Engineering risk of active faults
8. 7 Marks
   bRemedial measures to improve the competence of faulted sites.
   How to answer

   • Problems of faulted sites: leakage, settlement, shear
   • Remedial measures: grouting, drainage, excavation, reinforcement
   • Site selection and treatment criteria
9. 7 Marks
   aWhat do you mean by Remote Sensing? Discuss in detail.
   How to answer

   • Definition of remote sensing
   • Principle: EMR interaction, stages
   • Applications in civil engineering / geology
10. 7 Marks
    bWrite and explain about the different types, components and elements of remote sensing?
    How to answer

    • Types: active vs passive, optical, microwave
    • Components: sensor, platform, EMR source
    • Elements: energy source, atmosphere, target, sensor, data analysis
11. 5 Marks
    aWrite short notes on: Foot wall and hanging wall
    How to answer

    • Define foot wall and hanging wall with fault plane diagram
    • Identification in normal / reverse faults
    • Engineering significance
12. 4 Marks
    bHeave and throw
    How to answer

    • Define heave (horizontal) and throw (vertical) components
    • Diagram of fault displacement
    • Measurement and significance
13. 5 Marks
    cTransverse and rotational faults.
    How to answer

    • Define transverse faults
    • Define rotational faults
    • Distinguish with sketches and examples
14. 7 Marks
    aWrite a short note on availability of ground water.
    How to answer

    • Sources and occurrence of groundwater
    • Water table, aquifers, porosity/permeability
    • Availability factors and exploration
15. 7 Marks
    bWhat are the structures and textures of Metamorphic rocks with sketches?
    How to answer

    • Define metamorphic structures: foliation, schistosity, gneissose
    • Textures: granoblastic, porphyroblastic, etc.
    • Neat labelled sketches of each
16. 14 Marks
    Write short notes on any two of the following :

    1. i)Concept and causes of Volcanoes
    2. ii)Physical properties, uses and chemical composition of the "Biotite" mineral.
    3. iii)Classification of "Unconformity" and its importance in civil engineering.
    How to answer

    • Volcanoes: concept, types and causes
    • Biotite: physical properties, uses, chemical formula
    • Unconformity: classification and civil engineering importance