Karnataka 2nd PUC Model Question Paper 2024 for Geology

MODEL
QUESTION PAPER
II PUC

2024

PUC - II
MODEL QUESTION PAPER
2023-24
GEOLOGY (37)
Duration:3hrs 15min Maximum marks:80
Note:
• Allthepartsarecompulsory.
• Drawneat & labelled diagramswherevernecessary.
• Writecorrectquestion numbers.

PART – A
I. Answer all the following questions (5 X 1 = 5)
1. Rock type: i) Igneous rock ii) Sedimentary rock iii) Metamorphic rock
Example: a) Limestone b) Schist c) Syenite
Above are the name of rock types and their examples. Match the rock type with their correct
example by selecting an option below.
a.i - c, ii - b, iii - a b.i - a, ii - b, iii - c
c.i - b, ii - a, iii - c d. i-c, ii-a, iii-b

2. ● Rock gets formed either by magma or lava
● The process involved is cooling and consolidation
● It is also found in Karnataka
Based on the above characteristics identify the rock
a. Sedimentary rock b. Igneous rock
c. Metamorphic rock d. Mechanical rock

3. Sediments: Sand, gravel, clay and silt.
Arrange the sediments in their increasing grain size order.
a.Gravelsandsilt clay b.Claysiltsandgravel
c.Siltsandgravelclay d. Sandsiltgravelclay

4. Assertion (A): The rocks occurring in the epizone are slate and chlorite schist.
Reason (R): Becauseepizone occurs near the earth’s surface and is characterized by low

temperature and strong shear stress.
a.(A) is true, but (R) is false
b. (A) is false, but (R) is true

c. Both (A) and (R) are true and (R) is the correct explanation of (A)
d. Both (A) and (R) are true, but (R) is not the correct explanation of (A)

5. Suppose a person was send for a geological mapping of a particular area and was told to
identify the oldest rock formation in that area. How would he proceed?
a.Identifying the sequence of rock deposition
b.Identifying the structural changes
c.Identifying the grain size variation
d.Identifying the mineral composition

II. Fill in the blanks by selecting the correct answer given below (5 X 1 = 5)
(Answer: Granulose, Paleontology, Igneous, Joint, Clastic, Metamorphic)
6. Gneiss is an example of ___________ type of rocks.
7. Mechanically formed sedimentary rocks are also called as __________ rocks.
8. Marble shows ___________ structure.
9. Fracture in a rock along which there is no displacement is called ___________
10.The branch of geology which deals with the study of fossils is called __________

III. Match the following (5 X 1 = 5)
11. Sill a) Agent of metamorphism
12. Limestone b) Highest point of fold
13. Temperature c) Plant fossil
14. Crest d) Sedimentary rock
15. Ptillophyllum e) Concordant
f) Discordant

IV. Answer all the following questions (5 X 1 = 5)
16. Difference between lava and magma.
17.Which lava has high viscosity?
18. Mention one difference between true dip and apparent dip.
19. Given below is the figure of rock bed’s deposition. Identify the older rock bed and

younger rock bed based on the sequence of bed deposition.

20. What do you call the vertical plates extending from margin towards the center in corals?

PART – B
V. Answer any seven of the following questions (7 X 2 = 14)
21. What is a rock? Give one example of rock.
22. Name the two forms of intrusive igneous rocks.
23. What is stratification?
24. What is diagenesis?
25. What is fold axis?
26.

● Based on the above passage name the 5 five major distinct zones or groups into which
the archeans of Karnatakawhere classified by B Rama Rao as he is hinting in the
passage.
27. What are muscular impressions?
28. Give two uses of fossils.
29. Based on the figure given below, name the part 1 and part 2 of the specimen shown.

PART – C

VI. Answer any seven of the following questions (7 X 3 = 21)
30. What is dyke?
31. What is batholith?
32.Below are the images of rock specimens given:
● Name the rock shown in figure 1 and figure 2.
● What does the shape of clasts or fragments in both the figures indicate about
transportation.

33. Discuss dynamothermal metamorphism.
34. Explain schistose structure.
35.Based on the figure given below:
● Identify the type of fault at part 1 and part 2.
● Explain the fault identified at part 1 and part 2?

36. What is normal fault and reverse fault?
37.Read the passage given below and answer the following:

● Name the eras of Pre-cambrian eon.
● Name the eras of Phanerozoic eon.
● How is the life different from Pre-cambrian eon and Phanerozoic eon.
38. Write a note on geology of Karnataka.
39. Identify the types of fossilizations shown in figure a, figure b and figure c.

PART - D
VII. Answer any five of the following questions (5 X 5 = 25)
40. Given below is the picture of various structures:

● Name the structure shown in picture a, b, c, d and e.
● Explain the structures shown in picture a, b, c, d and e.
41. Explain the classification of igneous rocks based on mode of occurrence.
42. Explain the different kinds of metamorphisms.
43. Explain Brunton compass with a neat labelled diagram.
44. Given below is the sketch of types of joints:

● From the sketch above name the type of joint shown at ABC, MNO, JKL, PQR and
STU?
● Explain the joint seen at ABC, MNO, JKL, PQR and STU.
45. Differentiate between palaeozoic and mesozoic era.
46.With a neat labelled diagram explain the morphology of glossopteris.
47. With a neat labelled diagram explain the morphology of gastropods.

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