Geology Objective Sample Paper

Geology Objective Sample Paper
Geology Solved Paper

Q.1: Tourmaline belongs to:
a) Neso-silicate
b) Soro-silicate
c) Cyclosilicate
d) Phyllosilicate
Answer. (c)

Q.2: Colourless variety of Tourmaline is:
a) Rebellite
b) Achroite
c) Schorl
d) None of these
Answer. (b)

Q.3: CFBP stands for:
(a) Coal Fields Bio-product.
(b) Continental Flood Basal provision.
(c) Continental Frontal Basal platform.
(d) Chlorine Florine Bio-products.
Answer. (b)

Q.4: Black Toumaline is known as:
a) Schore
b) lndicolite
c) Sapphire
d) Achroite
Answer. (a)

Q.5: Mark which is not pyroxenoid:
a) Wollastonite
b) Pectolite
c) Chrysolite
d) Rhodonite
Answer. (c)

Q.6: Large crystals in pegmatite are formed due to:
(a) lnfluence of cooling rate.
(b) The presence of abundant volalites in a magma.
(c) Very high pressure.
(d) All the above.
Answer. (b)

Q.7: Emerald is a pale green variety of:
a) Topaz.
b) Zircon.
c) Beryl.
d) Tourmaline
Answer. (c)

8: The amount of assimilation of cool wall rock into a magma is limited by:
(a) Pressure.
(b) Composition of wall rock.
(c) Composition of magma.
(d) Thermal energy of the magma itself.
Answer. (d)

Q.9: The characteristic electrical property of Tourmaline is its:
a) High conductivity
b) Piezoelectricity
c) Pyroelectricity
d) High resistivity
Answer. (b)

Q.10: Emplacement of plutons is:
(a) Pretectonic.
(b) Syntectonic.
(c) Posttectonic.
(d) All the above.
Answer. (b)

Q.11: Leptynite is a:
(a) Garnetiferous granite.
(b) Calcareous granite.
(c) Tourmaline granite.
(d) Zircon granite.
Answer. (b)

Q.12: Pyroxenes belong to:
a) Single chain structure (lnosilicate)
b) Double chain structure (lnosilicate)
c) Nesosilicate
d) Sorosllicate
Answer. (a)

Q.13: Deccan traps are predominantly tholeiitic characterised by:
(a) Higher Fe and Ti.
(b) Lower Fe and Ti.
(C) Higher AI and Ca.
(d) Higher Mg and Na.
Answer. (a)

Q.14: Which is calcium poor pyroxene found in volcanic rocks:
a) Pigeonite
b) Angite
c) Diopsite
d) Hedenbergite
Answer. (a)

Q.15: The alkaline rocks are less abundant than tholeiites because of:
(a) Smaller degree of partial melting.
(b) Difference in density and viscosity of magmas.
(c) Non-ideal behaviour in the liquids.
(d) All the above are correct.
Answer. (d)

Q.16: Eulite - ferrosilite is:
a) Ca - rich and Fe - poor ortho pyroxene
b) Fe - rich and Ca - poor ortho pyroxene
c) Fe - rich pyroxene
d) Ca - rich clino pyroxene
Answer. (b)

Q.17: Which volcanic rock contains the lowest percentage of silica:
(a) Basalt
(b) Andesite.
(c) Trachyte.
(d) Rhyolite.
Answer. (a)

Q.18: What are the cleavage angles in pyroxenes:
a) Exactly 90°
b) 80° and 100°
c) 87° and 93°
d) 84° and 96°
Answer. (c)

Q.19: Schillerization is characteristic of:
a) Diopside
b) Hypersthene
c) Enstatite
d) Hedenbergite
Answer. (b)

Q.20: Reaction between a Pising magma and crystal with which it comes into contact is
generally termed as:
(a) Xenolith.
(b) Syntexis.
(c) Differentiation.
(d) None of these.
Answer. (b)

Q.21: Diallage mineral is:
a) Massive augite
b) Fibrous augite
c) Variety of Aegiriue
d) Massive hypersthene
Answer. (b)

Q.22: Which volcanic rock contains relatively high percentage of silica:
(a) Basalt.
(b) Andesite.
(c) Trachyte.
(d) Rhyolite.
Answer. (d)

Q.23: Crystals of pyroxenes are short prismatic with the nearly quadratic cross section due
to:
a) Cleavage pattern
b) Fracture pattern
c) Crystallization defect
d) None of the above
Answer. (a)

Q.24: Which volcanic rocks are characteristics of orogenic regions:
(a) Calc-volcanic rocks.
(b) Calc-Alkali volcanic rocks.
(c) Alkali-volcanic rocks.
(d) None of these.
Answer. (b)

Q.25: Pipe amygdales, commonly occur at the:
(a) Top of the flow.
(b) Middle of the flow.
(c) Base of the flow.
(d) Contact of two flows.
Answer. (c)