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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