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Tuesday, December 20, 2011

Geology Practice Test Paper

Geology Practice Test Paper

Sample Paper of Geology

Q1: What is the hardness of pyroxenes?

a) 4-5

b) 5-6

c) 6-7

d) 7-8

Answer. (b)

Q.2: The forms of the igneous bodies, depends upon:

(a) Mode of formation.

(b) Viscosity of magma.

(c) Nature of the country rocks.

(d) All the above.

Answer. (d)

Q.3: Foliated diopside is known as:

a) Diallage

b) Omphacite

c) Kunzite

d) Hiddenite

Answer. (b)

Q.4: Which is trichinic amphibole:

a) Anthophyllite

b) Tremolite

c) Riebeckite

d) Cossyrite

Answer. (d)

Q.5: Stock, bosses and roof-pendants are related to:

(a) Dyke.

(b) Sill.

(c) Batholiths.

(d) Lopolith.

Answer. (c)

Q.6: What are the cleavage angles in amphiboles:

a) 70° and 110°

b) 67° and 113°

c) 56° and 124°

d) 54° and 126°

Answer. (c)

Q.7: Match the following:

I II

1. Laccolith. i. Saucer shaped intrusive body.

2. Lopolith. ii. Cressentric shaped igneous body

3. Bysmalith. iii. Convex top and flat bottom.

4. Phacolith iv. Broken intrusive body.

a) 1-iii, 2-i, 3-iv, 4-ii.

b) 1-ii, 2-i, 3-iv, 4-iii.

c) 1-i, 2-ii, 3-iii, 4-iv

d) 1-iv, 2-iii, 3-ii, 4-i

Answer. (a)

Q.8: Mica belongs to:

a) Nesosilicate

b) Sorosilicate

c) Phyllosilicate

d) lnosilicate

Answer. (c)

Q.9: Lepidolite mica is:

a) Cr - bearing

b) Fl - bearing.

c) Li - bearing.

d) Fe - bearing.

Answer. (c)

Q.10: ‘Rift and grain’ structure is found very predomiently in:

a) Basalt.

b) Dolerite.

c) Granite.

d) Pegmatite.

Answer. (c)

Q.11: Percussion - figure found in mica when any pointed object is pressed against it the

figure is:

a) Four - rayed star

b) Six - rayed star

c) Eight - rayed star

d) Circular figure

Answer. (b)

Q.12: Mark the correct statement regarding chlorites:

a) These are flexible and elastic

b) These are flexible but not elastic

c) These are elastic but not flexible

d) These are brittle.

Answer. (b)

Q.13: The Myrmekite structure is generally found in:

(a) Basaltic rocks.

(b) Granitic rocks.

(C) Diorite rock.

(d) Dunite rock.

Answer. (b)

Q.14: Which mineral does not belong to chlorite group:

a) Penninite

b) Clinochlore

c) Prochlorie

d) Fayalite

Answer. (d)

Q.15: Kaolinite results from the alteration of the:

a) Quartzs

b) Felspars

c) Micas

d) Ampliboles

Answer. (b)

Q.16: A rock made up of euhedral crystals, the texture is described as:

(a) Allotriomorphic.

(b)Hypidiomorphic.

(c) Panidomorphic.

(d) None of these.

Answer. (c)

Q.17: Bole is:

a) Pure halloysite

b) lmpure halloysite

c) Red kaolonite

d) Illite.

Answer. (b)

Q.18: Ophitic texture is commonly shown by:

(a) Trachyte.

(b) Lamprophyres.

(C) Andesite.

(d) Dolerite.

Answer. (d)

Q.19: Fuller’s Earth is composed dominantly of:

a) Montmorillonite

b) Illite

c) Kaolinite

d) Pyrophyllite.

Answer. (a)

Q20: The Deccan trap basalt, as it is porphyric in nature, the phenocrysts are:

a) Plagioclase.

b) Plagioclase and olivine.

c) Plagioclase, olivine and clinopyroxene.

d) Olivine and clinopyroxene.

Answer. (c)

Q.21: Hyalophane isomorphous series is between:

a) K - felspar and Na felspar

b) K - felspar and Ca felspar

c) K - felspar and Ba felspar

d) Na - felspar and Ca felspar

Answer. (c)

Q.22: The grain-size variation is more or less continuous

from smallest to largest, the texture is called:

(a) Seriate.

(b) Porphyritic.

(C) Poikilitic.

(d) Miarolitic.

Answer. (a)

Q.23 : Low-temperature orthoclase is known as:

a) Sanidine

b) Adularia

c) Aventurine

d) Moonstone

Answer. (b)

Q.24: Intergrowth between orthoclase/microcline

and albite/oligoclase is known as:

a) Graphic

b) Myrmekitic

c) Zoning.

d) Perthite.

Answer. (d)

Q.25: The Formation of pillow lava indicates:

(a) Free eruption.

(b) Continental eruption.

(c) Sub-marine eruption.

(d) None of these.

Answer. (c)

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