Karnataka 2nd PUC Question Paper 2026 Geology

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Registration No. :

V1 – 2026
«µÀAiÀÄ ¸ÀAPÉÃvÀ /
37 (NS)
Subject Code

¨sÀÆUÀ¨sÀð±Á¸ÀÛç / GEOLOGY
[¸ÀªÀÄAiÀÄ: 3 UÀAmÉUÀ¼ÀÄ] [MlÄÖ ¥Àæ±ÉßUÀ¼À ¸ÀASÉå : 47] [UÀjµÀ× CAPÀUÀ¼ÀÄ : 80]
[Time : 3 Hours] [Total No. of questions : 47] [Max. Marks : 80]

Instructions : 1. All the parts are compulsory.

2. Draw neat and labelled diagrams wherever necessary.

3. Write correct question numbers.

4. For Part - A questions, only the first written answers will be
considered for evaluation.

PART – A

I. Answer all the following questions. (5 × 1 = 5)

1) What kind of structure is characterised by essentially of equidimensional
minerals?
a) Schistose
b) Granulose
c) Porphyritic
d) Ophitic

P.T.O.

37 (NS) -2-

2) Sediments : Sand, Gravel, Clay and Silt
Arrange the sediments in their increasing grain size order.
a) Sand → Gravel → Silt → Clay
b) Silt → Clay → Gravel → Sand
c) Clay → Silt → Sand → Gravel
d) Gravel → Sand → Clay → Silt

3) In rock cycle, metamorphic rocks can transform into :
a) Igneous only b) Igneous and Sedimentary
c) Metamorphic only d) Sedimentary only

4) What is the purpose of the divaricator muscles in brachiopod?
a) To close the shell b) To maintain balance
c) For respiration d) To open the shell

5) The attitude of bed is expressed by
a) Dip and fault b) Strike and fold
c) Strike and dip d) Fault and fold

II. Fill in the blanks. (5 × 1 = 5)

[Carbonization, Pumice, Mesozoic, Graben, Shape and distortion, Petrification]

6) The _________ era is known as ‘age of reptiles’.

7) In a _________ fault the central block is uplifted, creating a raised
structure.

8) In _________, the original material of plants and animals undergo
decomposition, increasing carbon content.

9) _________ is porous in nature.

10) In metamorphism, pressure leads to change _________ in parent rock.

-3- 37 (NS)

III. Match the following. (5 × 1 = 5)
11) A B
a) Fusus i) Visible life
b) Laterite ii) Gastropod
c) Precambrian iii) Tertiary rock
d) Gabbro iv) Volcanic rock
e) Marble v) Non-clastic
vi) Plutonic rock

IV. Answer all of the following questions. (5 × 1 = 5)
12) Define rock.
13) Define dip.
14) What is Cryptocrystalline?
15) Mention the sediment size grain of arenaceous rocks.
16) What is Syncline fold?

PART – B

V. Answer any seven of the following questions. (7 × 2 = 14)
17) Mention major divisions of rocks.
18) Name the shapes of crystal in igneous rocks.
19) What is ropy lava structure?
20) What are the characteristics of acidic lava?
21) With neat labelled diagram, define stratification.
22) What are ripple marks? Mention its types.
23) Write roles of chemically active fluid in metamorphism.
24) Write mineral composition of gneiss.
25) What is hanging wall? Draw neat labelled sketch.
26) What are the geomorphic regions of Karnataka?
27) How entire skeleton remains unchanged in fossilization?
28) What are tracks and trails?

37 (NS) -4-

VI. Answer any seven of the following questions. (7 × 3 = 21)
29) Explain columnar structure.
30) Write significance of rocks.
31) Classify sedimentary rocks based on origin.
32) Explain the process of metamorphism. Give example.
33) Write uses of Brunton compass.
34) With neat labelled diagram, define reverse fault.
35) Write significance of faults and folds.
36) With neat labelled diagram, explain law of order of superposition.
37) Prepare a chart showing Era, Period and Epoch of Cenozoic era.
38) Define following :
i) Calyx
ii) Tabulae
iii) Theca

VII. Answer any five of the following questions. (5 × 5 = 25)
39) Describe forms of igneous rocks.
40) Briefly describe the properties of Pegmatite and Granite.
41) Describe zones of metamorphism.
42) Explain types of unconformity.
43) With neat labelled diagram explain parts of fold.
44) Prepare chart of W.F. Smith’s classification of archeans.
45) Discuss the morphology and time range of brachiopod.
46) What is index fossil? Explain conditions of preservation of fossil.
47) Describe distribution of gastropod in geological time scale.

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