Kerala Plus Two Question Paper 2023 Geology

SECOND YEAR

Kerala Board
Question Paper
2023

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SY-529
SECOND YEAR HIGHER SECONDARY EXAMINATION, MARCH 2023

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

SY-529 1 P.T.O.

SECTION – I
Answer any 5 questions from 1 to 6. Each carries 1 score. (5 × 1 = 5)
1. Pick the odd one out from the following :
(Lava flow, Ash flow, Acid mine drainage, Pyroclastics)

2. Name the chief ore mineral of copper.

3. Fill in the blanks :
Petrified wood is an example for ________ mode of fossilisation.

4. Which one of the following is an artificial resource ?
(Natural gas, Water, Biogas, Sunlight)

5. Name the green-house gas released by the burning of fossil fuels.

6. Select the correct answer from the bracket.
Seismic waves that reach the seismograph at first.
(P-waves, S-waves, R-waves, L-waves)

SECTION – II
Answer any 6 questions from 7 to 14. Each carries 2 scores. (6 × 2 = 12)
7. Name any two products of petroleum.

8. Mention any two mineral based industries that are functioning in Kerala.

9. Describe any two environmental impacts of sand mining.

10. Mention any two tsunami safety rules.

SY-529 2

SECTION – I

1  6    5  .
1  . (5 × 1 = 5)

1.      .
( ,  ,      ,
)

2.  ()   .

3.   .
  ( ) __________ 
.

4.      ?
( , ,  ,  )

5.       
 .

6.    . 
  .
(-, -, -, -)

SECTION – II
7  14    6  .
2  . (6 × 2 = 12)
7.     .

8.      
  .

9.      .

10.      .

SY-529 3 P.T.O.

11. Briefly explain the formation of placer deposits with examples.

12. What is the difference between magnitude and intensity of an earthquake ?

13. What is the difference between the strike and dip of rock beds ?

14. Differentiate between elastic and plastic deformation.

SECTION – III
Answer any 5 questions from 15 to 20. Each carries 3 scores. (5 × 3 = 15)
15. Name the following :
(a) The branch of geology concerned with the economic minerals.
(b) The worthless non-metallic minerals found associated with ores.
(c) The concentration of metal content in an ore deposit.

16. What is meant by conservation of natural resources ? Suggest any two measures to
conserve mineral resources.

17. Define the following terms associated with earthquakes :
(a) Focus of an earthquake
(b) Seismic waves
(c) Seismograph

18. Match the Column-A with B and C :
A B C
Gabbro Hypabyssal Fine grained
Dolerite Volcanic Coarse grained
Basalt Plutonic Medium grained

SY-529 4

11.      
.

12.   ()  () 
 .

13.        ?

14.    ()   .

SECTION – III
15  20    5  .
3  . (5 × 3 = 15)
15.   .
(a)     
.
(b)     .
(c)     .

16.       ? 
     .

17.      
.
(a)    ()
(b)  
(c)   ( )

18. , ,    .
  
   

   

   
 

SY-529 5 P.T.O.

19. Correct the mistakes in the underlined part of the given sentences :
(a) Basalt is a monominerallic rock.
(b) Marble is formed by the metamorphism of sand stone.
(c) Shale is a residual sedimentary rock.

20. Explain any three conditions necessary for the preservation of fossils in rock strata.

SECTION – IV
Answer any 4 questions from 21 to 25. Each carries 4 scores. (4 × 4 = 16)
21. Explain the four types of coal.

22. List of the major effects of earthquakes.

23. State and explain any two principles of stratigraphy.

24. Suggest any four strategies to minimise coastal erosion.

25. Explain the given structural features drawing necessary diagrams.
(a) Anticline and Syncline (2)
(b) Normal fault and reverse fault (2)

SECTION – V
Answer any 2 questions from 26 to 28. Each carries 6 scores. (2 × 6 = 12)
26. (a) How are the three types of rocks namely igneous, sedimentary and metamorphic
rocks formed ? (3)
(b) Draw a diagram showing the rock cycle. (3)

27. (a) What are the causes of landslides ? (3)
(b) How can we mitigate the land slide hazards ? (3)

28. How do the quarrying and mining activities affect land, water and air ?
______________

SY-529 6

19.       .
(a)     .
(b)      .
(c)    .

20.    
   .

SECTION – IV
21  25    4  .
4  . (4 × 4 = 16)
21.     .

22.    .

23.      .

24.      
 .

25.      .
(a)   (2)
(b)   ( )  ( ) (2)

SECTION – V
26  28    2  .
6  . (2 × 6 = 12)
26. (a)    , ,   
  ? (3)
(b)      . (3)

27. (a)     ? (3)
(b)       ? (3)

28.     , ,   
 ?
______________

SY-529 7 P.T.O.

SY-529 8