Goa Board Class 12 Question Paper 2022 Geology

2022 XI 21 0230 Seat No.

Time : 1½ Hours FIRST-TERM GEOLOGY
Subject Code

H 4 7 0 6
Total No. of Questions : 40 (Printed Pages : 12) Maximum Marks : 40

INSTRUCTIONS : (i) This paper contains 40 questions carrying 1 mark each.

(ii) Every question has four choices for its answer (A), (B),

(C), (D) and only one of them is correct answer.

(iii) On the OMR sheet, for each question number, darken

with a ball point pen ONLY ONE bubble corresponding

to what you consider to be the most appropriate answer,

from among the four choices.

(iv) Please note that it is not possible to change the

answer once you have filled up the bubble with

a ball point pen. Hence sufficient care must be

taken while darkening the bubbles.

(v) For each question, you will be awarded ONE mark if

you have darkened only the bubble corresponding to

the correct answer. In all other cases, you will get zero

mark. There is no negative mark.

(vi) Only one OMR sheet will be provided.

(vii) Use only Black or Blue ball point pen.

H-4706 [FT] 1 P.T.O.

1. When the plunge of fold is zero, then the axis of the fold is said to be ......... 1

(A) Vertical

(B) Horizontal

(C) Inclined at 60º to the horizontal

(D) Inclined at 60º to its normal

2. Folds characterized by well-defined, sharp hinge points are called .......... 1

(A) Conjugate folds

(B) Chevron folds

(C) Cuspate folds

(D) Cylindrical folds

3. Match list I with list II and select the correct answer using the codes given
below the lists : 1

List I List II

(a) Axis of fold (1) Angle which axis makes with the
horizontal plane

(b) Plunge of fold (2) Line drawn parallel to the hinge
line of fold

(c) Crest (3) Lowest point in a down arched fold

(d) Trough (4) Highest point in a up arched fold

Codes :

(A) (a)-(2), (b)-(1), (c)-(4), (d)-(3)

(B) (a)-(1), (b)-(4), (c)-(2), (d)-(3)

(C) (a)-(3), (b)-(2), (c)-(1), (d)-(4)

(D) (a)-(4), (b)-(1), (c)-(2), (d)-(3)

H-4706 [FT] 2

4. Reverse fault with very shallow dipping fault planes (< 10 degree) are called
.................................. 1

(A) Normal fault

(B) Strike-slip fault

(C) Dip-slip fault

(D) Thrust fault

5. Which of the following is complimentary to the dip ? 1

(A) Strike

(B) Hade

(C) Rake

(D) Pitch

6. Shortening of the Earth’s crust is accommodated by ................................. 1

(A) Folds and Joints

(B) Normal and Reverse fault

(C) Folds and Reverse fault

(D) Folds and Normal fault

7. The main varieties of coal in correct order from low to high carbon content
are .......................................... 1

(A) Peat, Anthracite, Bituminous, Lignite

(B) Anthracite, Bituminous, Lignite, Peat

(C) Peat, Lignite, Bituminous, Anthracite

(D) Bituminous, Peat, Lignite, Anthracite

H-4706 [FT] 3 P.T.O.

8. Choose the correct chemical formula for Chalcopyrite............................ 1

(A) CuFeS2

(B) Cu2Co3(OH)2

(C) CaSO4 – 2H2O

(D) Al2O32H2O

9. The plunge of a fold means ................................... 1

(A) Inclination of hinge line with horizontal

(B) Average inclination of both limbs and horizontal

(C) Inclination of fold crest line with horizontal

(D) Inclination of fold axis with horizontal

10. If the heave of the fault is zero, then the fault is ..................... 1

(A) High angle fault

(B) Low angle fault

(C) Horizontal fault

(D) Vertical fault

11. Joints which run in a direction that lies between the strike and dip direction

of the rock beds, are called .................................. 1

(A) Strike joint

(B) Dip joint

(C) Oblique joint

(D) Bedding joint

H-4706 [FT] 4

12. From the given diagram identify the type of structural feature. 1

Clay

(A) Reverse fault

(B) Angular unconformity

(C) Non-conformity

(D) Disconformity

13. The true dip of a bed is N25ºW, the strike direction of that will be ..... 1

(A) N65ºE

(B) S55ºE

(C) S65ºE

(D) N70ºW

14. Which of the following indicates an unconformity ? 1

(A) Sandstone

(B) Conglomerate

(C) Shale

(D) Grit

H-4706 [FT] 5 P.T.O.

15. Among the following which mineral occurs as placer deposit ? 1

(A) Psilomelane

(B) Magnetite

(C) Bauxite

(D) Galena

16. When gravity is the agency involved in placing economic deposits, the deposit
is called ................................ 1

(A) Beach placers

(B) Alluvial placers

(C) Aeolian placers

(D) Deluvial placers

17. In Orissa iron ore are located in ............................. 1

(A) Mayurbhanj district

(B) Keonjhar district

(C) Both (A) and (B)

(D) Koraput district

18. Which state has the only diamond mine in the country ? 1

(A) Kerala

(B) Madhya Pradesh

(C) Karnataka

(D) Bihar

H-4706 [FT] 6

19. Deposits that were formed after the formation of host rocks are called ......... 1

(A) Placer deposit

(B) Epigenetic deposit

(C) Metamorphic deposit

(D) Syngenetic deposit

20. Which among the following is not the essential condition for hydrothermal

deposits ? 1

(A) Highly active fluid

(B) Suitable pathways

(C) Highly enriched fluid

(D) Highly inactive fluids

21. The ore mineral which shows non-metallic lustre is ........................... 1

(A) Hematite

(B) Galena

(C) Bauxite

(D) Magnetite

22. The streak exhibited by a mineral Hematite is ............................... 1

(A) Black

(B) Green

(C) Cherry red

(D) Blue
H-4706 [FT] 7 P.T.O.

23. Economically the most important formation of Goa group of rocks is ........ 1

(A) Vageri formation

(B) Sanvordem formation

(C) Barcem formation

(D) Bicholim formation

24. An ore mineral in oxide form is ............................... 1

(A) Galena

(B) Chalcopyrite

(C) Psilomelane

(D) Pyrite

25. Which of the following would act as a cap rock in case of oil trap ? 1

(A) Sandstone

(B) Laterite

(C) Limestone

(D) Shale

26. Gash veins are typically seen in ............................... 1

(A) Limestone

(B) Laterite

(C) Sandstone

(D) Granite

H-4706 [FT] 8

27. An example of early formed segregation deposit is ........................ 1

(A) Chromium

(B) Titanium

(C) Aluminium

(D) Laterite

28. Best example of a crystallized ore mineral is .............................. 1

(A) Fluorite

(B) Zircon

(C) Calcite

(D) Galena

29. If an igneous rock consists of quartz in large quantity, the rock could be
.......................................... 1

(A) Basalt

(B) Rhyolite

(C) Gabbro

(D) Dunite

30. Pearly lustre in phyllite is attributed to the presence of ......................... 1

(A) Orthoclase

(B) Muscovite

(C) Quartz

(D) Olivine
H-4706 [FT] 9 P.T.O.

31. Which among the following rocks shows granulose structure ? 1

(A) Marble

(B) Gneiss

(C) Chlorite schist

(D) State

32. A very coarse grained clastic sedimentary rock of varied composition is termed
as ................................... 1

(A) Arenaceous rock

(B) Argillaceous rock

(C) Calcareous rock

(D) Rudaceous rock

33. In porphyritic texture the large crystal is termed as ............................. 1

(A) Oikocryst

(B) Phenocryst

(C) Xenolith

(D) Chadocryst

34. Volcanic equivalent of rock gabbro is .............................. 1

(A) Basalt

(B) Granite

(C) Rhyolite

(D) Trachyte

35. Which among the following is not a mafic minearl ? 1

(A) Amphibole

(B) Mica

(C) Pyroxene

(D) Plagioclase

H-4706 [FT] 10

36. A rudaceous rock with angular clasts from the following is .................. 1

(A) Conglomerate

(B) Sandstone

(C) Granite

(D) Breccia

37. Sedimentary rock likely to be associated with Bauxite is ......................... 1

(A) Shale

(B) Laterite

(C) Limestone

(D) Sandstone

38. When granite undergoes contact metamorphism the net result may be ......... 1

(A) Marble

(B) Schist

(C) Gneiss

(D) Phyllite

39. Which of the following best shows the increasing grade of metamorphism ? 1

(A) Shale-schist-slate-phyllite

(B) Schist-slate-phyllite-shale

(C) Shale-slate-phyllite-schist

(D) Phyllite-slate-schist-phyllite

40. If a rock consists of clast of quartz welded together by calcite, the rock would
be called as ................................... 1

(A) Ferruginous sandstone

(B) Calcareous sandstone

(C) Siliceous sandstone

(D) Shelly limestone

H-4706 [FT] 11 P.T.O.

H-4706 [FT] 12