Kerala Plus One Question Paper 2025 Geology

KERALA BOARD

QUESTION
PAPER
2025
DOWNLOAD PDF
Kerala Board of Public
Examinations

FY-329
Reg. No. : ......................................

Name : ...........................................

FIRST YEAR HIGHER SECONDARY EXAMINATION, MARCH 2025

Part – III Time : 2 Hours
GEOLOGY Cool-off time : 15 Minutes
Maximum : 60 Scores

General Instructions to Candidates :
 There is a ‘Cool-off time’ of 15 minutes in addition to the writing time.
 Use the ‘Cool-off time’ to get familiar with questions and to plan your answers.
 Read questions carefully before answering.
 Read the instructions carefully.
 Calculations, figures and graphs should be shown in the answer sheet itself.
 Malayalam version of the questions is also provided.
 Give equations wherever necessary.
 Electronic devices except non-programmable calculators are not allowed in the
Examination Hall.

 
    15  ‘  ’ .
 ‘  ’    
 .
      .
    .
  , , ,   
.
   .
    .
     
    .

FY-329 1 P.T.O.

SECTION – I
Answer all questions from 1 to 5. Each carries 1 score. (5 × 1 = 5)

1. Branch of Earth science concerned with universe is _____ .

2. Select the odd one out :
(Mushroom rocks, ventifacts, sand dunes, desert pavements)

3. The true shape of the earth is described by the term _____ .

4. The average salinity of sea water is _____ ppt. (5, 25, 35, 55)

5. A _____ is a combination of several mountain ranges, mountain systems and
mountain chains.

SECTION – II
Answer any 6 questions from 6 to 12. Each carries 2 scores. (6 × 2 = 12)
6. Name the following :
(a) Mechanical weathering by plant roots
(b) Soils which are seen in their place of formation itself

7. Correct the underlined part of the sentence and rewrite :
(a) Weight is the general term applied to the materials transported by a river.
(b) Pot holes are produced by the deposition of streams.

8. Answer the following about minerals :
(a) The mineral used in the manufacture of plaster of Paris.
(b) The gemstone which shows red colour.

9. Write in brief about the following branches of Geology.
(a) Palaeontology
(b) Petrology

10. Write short notes on the following :
(a) Water table
(b) Karst topography
FY-329 2

SECTION – I
1  5    . 1  . (5 × 1 = 5)
1.      ________.

2.  .
(, , ,  )

3.      
________.

4.    ________ ppt . (5, 25, 35, 55)

5.  , ,  
  _________ .

SECTION – II
6  12    6 
. 2  . (6 × 2 = 12)
6.   .
(a)      
(b)     

7.      .
(a)       
 .
(b)       .

8.    .
(a)      
(b)    

9.      .
(a) 
(b) 

10.     .
(a)  
(b)  

FY-329 3 P.T.O.

11. Describe the formation of the following features :
(a) Sea cliffs
(b) Coral reefs

12. Evaluate the supporting evidences of the continental drift theory.

SECTION – III
Answer any 5 questions from 13 to 18. Each carries 3 scores. (5 × 3 = 15)

13. Explain the functions of any three major geological organizations of our country.

14. Briefly describe the Big bang hypothesis about the origin of universe.

15. ‘Mass wasting’ is the term applied to the downward movement of materials along
slopes.’ Briefly explain the main types of mass wasting.

16. Explain the formation of the following types of aeolian land forms :
(a) Deflation hollows
(b) Loess
(c) Barchans

17. Describe any three features produced by the erosion of glaciers.

18. Describe the formation of residual mountains, fold mountains and volcanic
mountains. Give example for each type.

SECTION – IV
Answer any 4 questions from 19 to 23. Each carries 4 scores. (4 × 4 = 16)

19. Fill in the blanks by using the correct answer from the bracket
(Angle of repose, Geysers, Ice ages, Alfred Wegener)
(a) Periodically eruptive hot springs are called _____ .
(b) The angle which a material can rest without slipping on slopes is _____ .
(c) The proposer of continental drift hypothesis is _____ .
(d) Period on the earth history which is mostly covered with glaciers is called _____ .
FY-329 4

11.      .
(a)   (b) 

12.      .

SECTION – III
13  18   5  .
3  . (5 × 3 = 15)
13.       
  .

14.    
 .

15. ‘ ’     .
     .

16.      .
(a)  
(b) 
(c) 

17.       
.

18.  ,  ,   
 .    .

SECTION – IV
19  23   4  .
4  . (4 × 4 = 16)
19.       .
( , , ,  )
(a)     ________ 
.
(b)      
  ________  .
(c)     ________ .
(d)      
________  .

FY-329 5 P.T.O.

20. Explain the layered internal structure of the earth with the help of a diagram.

21. Distinguish between the following pairs :
(a) Porosity & permeability (2)
(b) Stalactite and stalagmite (2)

22. Give the structure of the ocean floor with suitable diagram.

23. Describe the different types of convergent plate boundaries and the geological
features associated with them.

SECTION – V
Answer any 2 questions from 24 to 26. Each carries 6 scores. (2 × 6 = 12)

24. Discuss the detailed classification of earth processes with examples. Prepare a
detailed note on different chemical weathering types.

25. Explain the following features of rivers :
(a) Stream valleys and water falls (2)
(b) Definition and diagrams of Meanders and Delta (4)

26. What are the physical properties of minerals ? Explain
______________

FY-329 6

20.       
 .

21.    .
(a)   (2)
(b)   (2)

22.       .

23.     ( )  
  .

SECTION – V
24  26   2   .
6  . (2 × 6 = 12)
24.       
.       
.

25.    .
(a)    (2)
(b)     (4)

26.    ? .

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FY-329 7 P.T.O.

FY-329 8