Question 1

Which one among the following planets in the Solar system is most similar in size to the Earth?
A

Mercury

B

Venus

C

Neptune

D

Uranus

Explanation:

In our solar system both the size of the earth and the venus are comparable. They are often termed as twin sisters of our solar system. The radius of the earth is 6378 km and venus is 6052 km, which is quite similar

Question 2

Which of the following minerals always appears to be darker in color than the other minerals in the list?
A

Plagioclase

B

K-feldspar

C

Calcite

D

Biotite

Explanation:

Biotite is a common phyllosilicate mineral within the mica group. The high content of iron ions gives it a dark hue. It is sometimes called "iron mica" because it is more iron-rich than phlogopite.

Question 3

Fissility is best shown by
A

sandstone

B

siltstone

C

shale

D

limestone

Explanation:

Shale typically exhibits varying degrees of fissility. Because of the parallel orientation of clay mineral flakes in shale, it breaks into thin layers, often splintery and usually parallel to the otherwise indistinguishable bedding planes.

Question 4

Which of the following minerals belong to the oxide group?
A

Pyrite (FeS2)

B

Hematite (Fe2O3)

C

Calcite (CaCO3)

D

Apatite (Ca5(PO4)(F, Cl, OH))

Question 5

Match the Formations in Group I with corresponding characteristic fossils in Group II. Group I Group II P. Barakar Formation 1. Stegodon Q. Uttatur Formation 2. Sauropoda R. Dhok Pathan Formation 3. Belemnites S. Lameta Formation 4. Glossopteris
A

P-3 Q-1 R-4 S-2

B

P-4 Q-3 R-1 S-2

C

P-3 Q-4 R-1 S-2

D

P-4 Q-3 R-2 S-1

Question 6

Which of the following minerals are built from the single chain silicate structure?
A

Olivine ((Mg, Fe)2SiO4)

B

Pyroxene ((Mg, Fe)Si2O6)

C

Amphibole (NaCa2(Mg, Fe, Al)5(Si, Al)9)O22(OH)2)

D

Biotite (K(Mg, Fe)3(AlSi3O10)(OH)2

Explanation:

Pyroxenes are single-chain silicates with the general formula XYSi2O6, where X and Y are either both divalent cations (mainly Ca, Fe, Mg), or mono- (Na, Li) and trivalent cations (Al, Fe) respectively.

Question 7

Which of the following is/ false for crystallization of plagioclase phenocrysts from a basic magma forming a layered intrusion?
A

Cumulus texture at the base

B

Albite-rich late plagioclase at the top

C

Anorthite-rich early plagioclase at the base

D

Quench texture at the base

Question 8

Major mass extinction events occurred in the
A

end Silurian

B

end Carboniferous

C

end Permian

D

early Devonian

Explanation

The Permian extinction was characterized by the elimination of about 90 percent of the species on Earth, which included more than 95 percent of the marine species and 70 percent of the terrestrial species. In addition, more than half of all taxonomic families present at the time disappeared.

Question 9

A Part of any stream or Rock that is exposed at the surface is known as
A

Fault

B

Fold

C

Outcrop

D

Dyke

Question 10

Identify the pair from the following list that is NOT correctly matched
A

Ropy lava – pahoehoe flow

B

Caldera – stratovolcano

C

Pillow basalt – subaerial eruption

D

Amygdales – filled vesicles