Karnataka 2nd PUC Model Question Paper 2025 for Geology

ACADEMIC YEAR

2025

Karnataka
Board
Model Paper

BLUE PRINT FOR THE MODEL QUESTION PAPER- 01 2024-25
Subject: GEOLOGY Class: PUC - II
No. of Remember Understanding Application HOTS
Units Marks
Periods Marks Marks Marks Marks
1 2 3 5 1 2 3 5 1 2 3 5 1 2 3 5
1. Introduction 5 5 1 1 1 1
2. Igneous rocks 25 25 1 1 1 2 1 1 2 1
3. Sedimentary rocks 10 10 1 1 1 1 1 1
4. Metamorphic rocks 15 14 1 1 1 1 1 1
5. Structural geology 25 25 2 1 1 1 1 1 1 1 1
6. Stratigraphy 15 15 1 1 1 1 1 1
7. Palaeontology 25 25 2 2 1 2 1 1
Total 120 119 6 12 9 10 7 4 6 15 3 6 12 10 4 2 3 10

Number Sl. No Objectives Marks Allotted Percentage
Question type Total
of
(Based on marks) marks 1 Remember 37 31.09
questions
1. MCQ (1 marks each question) 05/05 05/05 2 Understanding 32 26.89
2. Fill in the blanks (1 marks each question) 05/05 05/05 3 Application 31 26.05
3. Match the following (1 marks each question) 01/01 05/05
4 HOTS 19 15.96
4. Very short answer - VSA (1 marks each question) 05/05 05/05
Total 119 100
5. Short answer – SA (2 marks each question) 07/12 14/24
6. Short answer – SA (3 marks each question) 07/10 21/30
7. Long answer – LA (5 marks each question) 05/09 25/45
Total 35/47 80/119

GOVERNMENT OF KARNATAKA
KARNATAKA SCHOOL EXAMINATION AND ASSESSMENT BOARD
MODEL QUESTION PAPER - 01 2024-25
GEOLOGY (37)
Duration: 3.00 hour Max. Marks: 80
Instructions:
1. All parts are compulsory.
2. Draw neat labelled diagrams wherever necessary.
3. Write correct question numbers.
4. For part A questions only first written answers will be considered for evaluation.
------------------------------------------------------------------------------------------------------------------------------------------------
PART-A
I. Answer all of the following questions. (5X1=5)
1. What process in the rock cycle is most responsible for turning an igneous
rock into a sedimentary rock?
a. Metamorphism, where igneous rock alters by heat and pressure.
b. Weathering and erosion followed by deposition and compaction.
c. Melting, when igneous rock melts and cools to form sedimentary rock.
d. Sublimation, where directly transformed into sedimentary rock.
2. Which factor is most important in distinguishing between clastic and non-
clastic sedimentary rocks?
a. Rocks formed from pre-existing fragments.
b. The mineral composition of rocks.
c. The colour of rocks.
d. Precipitation of dissolved mineral.
3. If a geologist observes a sequence of metamorphic rock from slate to schist
and the gneiss then what can we conclude about metamorphic conditions.
a. The rocks were subjected to lower temperature and pressure.
b. The rock underwent changed due to increase in temperature.
c. The rock experience metamorphic process primarily by chemical fluid.
d. The rock experiences high to low temperature and pressure environment.
4. Match the correct sequence of various geological time units.
A. Eon B. Period C. Age D. Epoch
i. System ii. Eonthem iii. Series iv. Stage
a. A-i. B-iii. C-iv. D-ii. b. A-ii. B-i. C-iv. D-iii.
c. A-ii. B-iv. C-i. D-iii. d. A-ii. B-i. C-iii. D-iv.
5. Which of the following factor is not applicable for folding.
a. Extension & bending c. Displacement
b. Stress d. Strain

II. Fill in the blanks (5X1=5)
(Petrology, Pohoehoe, True dip, Triassic, Blocky lava, CaCO3)
6. _________is perpendicular to the strike direction.
7. The shell of gastropods is composed of ________
8. Ropy lava structure is also known as ________
9. ________ is the branch of geology which deals with the study of rocks.
10. _______ is the period of Mesozoic era.
III. Match the following. (5X1=5)

11.
a. Granite I. Gastropod
b. Conglomerate II. Igneous rock
c. Quartzite III. Sedimentary rock
d. Plunge IV. Head
e. Aperture V. Angle
VI. Metamorphic rock
IV. Answer all of the following questions. (5X1=5)
12. Give an example of primary rock.
13. Define texture.
14. What is sediment?
15. Define strike.
16. What is calyx?
PART-B
V. Answer any Seven of the following (7X2=14)
17. Define secondary rock with example.
18. What is laccolith?
19. Write the characteristics of acidic lava.
20. Compare allotriomorphic and hypidiomoprphic texture.
21. What is diagenesis?
22. Draw neat labelled diagram of symmetrical ripple marks.
23. Mention the zone where dynamothermal metamorphism with example.
24. What is disconformity?
25. Write geochronological units of geological time scale.
26. Define index fossil.
27. Name any two plant fossil.
28. What is mesozone?

VI. Answer any Seven questions from the following. (7X3=21)
29. How would you use the attitude of beds to determine whether a sequence
of sedimentary layer has been overturn?
30. Write the uses of Brunton compass.
31. Discuss how the texture of igneous rocks can be used to tell the cooling
history rock.
32. Differentiate between conformable and unconformable layers.
33. Write the suitable condition for preservation of fossil as mold and cast.
34. With neat labelled diagram explain amygdaloidal structure.
35. With neat labelled diagram explain ophitic texture.
36. Write the properties of Marble.
37. Draw a neat labelled diagram of angular unconformity.
38. Explain metallic deposits of archeans.

VII. Answer any five questions from the following. (5X5=25)
39. Compare life in Paleozoic era to that of Cenozoic era and comment on
evolution of life.
40. Differentiate between galssopteris and ptillophyllum.
41. Discuss the types of igneous rocks that are commonly associated as
building material.
42. How structural features are helpful in mining, construction of dam, tunnel
etc.?
43. Explain the distribution of trilobite in geological history.
44. Draw a neat labelled diagram of calceola.
45. With neat labeled diagram explain gneissose structure.
46. Discuss elements of fold.
47. Explain the properties of Pumice and Dolerite.

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