Geology IOCL Practice Solved Test
Objective Geology Questions
Q1: The charnockites and Khondalites of India characteristically belong to
(a) Green schist facies
(b) Amphibolites facies
(c) Granulite facies.
(d) Epidote - amphibolites facies
ANSWER. (c)
Q. 2: Granulite facies is distinguished from amphibolites facies by:
(a) The incoming of pyroxenes and lack of muscovite.
(b) The out coming of pyroxenes.
(c) The incoming of pyroxenes and excess of muscovite
(d) None of these.
ANSWER. (a)
Q. 3: In ender bite the dominant feldspar is:
(a) Plagioclase
(b) Microcline
(c) Orthoclase
(d) Bytownite.
ANSWER. (a)
Q. 4: If blue schist belt is present within continents it suggests:
(a) Great crystal activity
(b) Interface between the margins of continents and oceans.
(c) A fossils continental margin.
(d) All the above.
ANSWER :( d)
Q. 5: The substitution of one ion for another in the atomic structure of a mineral, without a
Change in structure is known as.
(a) Deuteric alteration
(b) Diadochy
(c) Diagenesis
(d) Para genesis.
ANSWER :( b)
Q.6: Which minerals are formed only under metamorphic conditions:
(a) Staurolite and Kyanite
(b) Staurolite, Kyanite, Sillimanite
(c) Staurolite, Kyanite, Sillimanite and asbestos.
(d) Staurolite, kyanite, Sillimanite, asbestos and talc.
ANSWER :( c)
Q.7: Granitisation is the metamorphic process whereby:
(a) A pre-existing rock is converted to without melting granite.
(b) Granite rock is converted to gneiss
(c) Granite rock is melted.
(d) A pre-existing rock is converted to granite by melting.
ANSWER:(a)
Q.8. When a dolerite dyke is intruded into a country rock, the columnar joining occurs:
(a) ln the centre of the dolerite dyke
(b) At the sides of the dolerite dyke
(c) At the contact between dyke and country rock.
(d) At a greater depth in the dyke
Answer. (a)
Q.9: Grand-scale metamorphism in mid-oceanic ridges is called:
(a) Ridges metamorphism
(b) Ocean metamorphism
(c) Ocean-floor metamorphism
(d) Mid-oceanic metamorphism
Answer. (c)
Q.10: Foliated fabrics are exhibited by:
(a) Slates
(b) Gneisses
(c) Migmatites
(d) All the above
Answer. (d)
Q.11: Metamorphic rock derived from gravel rocks are known as:
(a) Psephitic rocks
(b) Psammitic rocks
(c) Pelitic rocks
(d) Relict rocks
Answer. (a)
Q.12: Hornfelsic fabric is typically developed in:
(a) Contact metamorphosed pelitic sediments
(b) Contact metamorphosed psammitic sediments
(c) Dynamic metamorphosed rocks
(d) Dynamothermal metamorphosed rocks.
Answer. (a)
Q.13: Mylonite rock shows the:
(a) Cataclastic fabric
(b) Granulitic fabric
(c) Hornfelsic fabric
(d) Foliated fabric.
Answer. (a)
Q.14: In the facies of regional metamorphism the load pressure is in the range of:
(a) 1000 to 3000 bars
(b) 3000 to 5000 bars
(c) 5000 to 10000 bars
(d) 3000 to 12000 bars
Answer. (d)
Q.15: In Eskola’s ACF diagram‘F’ represents:
(a) Feo
(b) Feo + Mgo
(c) Feo + Mgo + Mno
(d) Feo + Mgo + Mno +
Answer. (c)
Q.16: A rock composed of ore mineral and silicates formed by contact metamorphism of
carbonate rocks, is called:
(a) Gondite
(b) Tactite
(c) Skarn
(d) Chormockite.
Answer. (b)
Q.17: Granulite is a:
(a) Low grade metamorphic rock
(b) Medium grade metamorphic rock
(c) High grade metamorphic rock
(d) None of these.
Answer. (c)
Q.18: The correct sequence of metamorphic zones is:
(a) Chlorite, Biotite, Gamet, Staurolite, Kyanite and Sillimanite.
(b) Biolite, Chlorite, staurolite, Garnet, Sillimanite and Staurolite.
(c) Chlorite, Biolite Staurolite, Garnet Sillimanite and Kyanite.
(d) Chlorite, Biolite, Staurolite, Garnet Sillimanite and Kyanite.
Answer. (a)
Q.19: The chitradurg schist belt is example of the:
(a) Epidote amphibolites facies.
(b) Green schist facies.
(c) Amphibolites facies
(d) Granulite facies.
ANSWER.(b)
Q. 20: The amphibolites fogies include the:
(a) Chlorite and garnet zones
(b) Staurolite zone
(c) Staurolite and Kyanite zones
(d) Staurolite, Kyanite and Sillimanite zones. `
ANSWER. (d)
Q. 21: Quartz microcline lgpersthene is the assemblage of:
(a) Khondalites
(b) Charnockites
(c) Goodie
(d) Kudu rite.
ANSWER. (b)
Q. 22: Ender bite is a type of:
(a) Khondalites
(b) Goodie
(c) Charnockites
(d) Obdurate.
ANSWER. (c)
Q. 23: Khondalites is:
(a) Garnet -Sillimanite schist
(b) Garnet -Sillimanite - graphite schist.
(c) Quartz - Kyanite - graphite schist
(d) Quartz - feldspar - garnet schist.
ANSWER. (b)
Q. 24: Which facies are formed at very high pressure?
(a) Blue schist facies.
(b); Eclogite facies
(c) Sandinista facies.
(d) Both a and b.
ANSWER :( d)
Q. 25: Match the following columns:
I ll
1. Phlebitis (i) Eye - like
2. Ptymatic folding (ii) Network of vein lets
3. Augean (iii) Veined (gneisses)
4. Diktyonitic (iv) Disharmonic tortuous folds:
(a) 1-ii, 2-iv, 3-iii, 4-i
(b) 1-i, 2-ii, 3-iii, 4-iv
(c) 1-iii, 2-iv, 3-i, 4-ii
(d) 1-iv, 2-iii, 3-ii, 4-i
ANSWER:(c)
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