Geography ยท Science General
Rocks and Earth Materials
1,176 Questions
Study geographical questions centered around rocks, minerals, and earth materials. The focus is on the formation and identification of igneous, sedimentary, and metamorphic rocks. These earth science topics are commonly tested in civil services and state level examinations.
Igneous rocksSedimentary rocksMetamorphic processEarth materialsGeomorphic symbols
Rocks and Earth Materials Questions
Which of these is a type of cave system formed by the dissolution of soluble rock, such as limestone or dolomite?
C
Correct answer
Explanation
Karst is a type of cave system formed by the dissolution of soluble rock, such as limestone or dolomite, by water over a long period of time.
The Aravalli Range is primarily composed of which type of rocks?
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Gneiss and Schist
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Sandstone and Limestone
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Granite and Basalt
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Laterite and Alluvium
A
Correct answer
Explanation
The Aravalli Range is composed primarily of gneiss and schist, which are metamorphic rocks formed from the transformation of pre-existing rocks under high temperature and pressure.
The Deccan Plateau is primarily composed of which type of rocks?
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Basalt and Lava
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Sandstone and Shale
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Limestone and Dolomite
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Granite and Gneiss
A
Correct answer
Explanation
The Deccan Plateau is composed primarily of basalt and lava, which were formed by volcanic eruptions during the Cretaceous period.
The Himalayan Mountains are primarily composed of which type of rocks?
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Sedimentary Rocks
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Metamorphic Rocks
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Igneous Rocks
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All of the above
D
Correct answer
Explanation
The Himalayan Mountains are composed of a variety of rock types, including sedimentary rocks, metamorphic rocks, and igneous rocks.
The Thar Desert is primarily composed of which type of rocks?
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Sandstone and Limestone
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Granite and Gneiss
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Basalt and Lava
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Laterite and Alluvium
A
Correct answer
Explanation
The Thar Desert is composed primarily of sandstone and limestone, which were deposited by ancient rivers and seas.
The Konkan Coast is primarily composed of which type of rocks?
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Basalt and Lava
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Sandstone and Limestone
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Granite and Gneiss
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Laterite and Alluvium
A
Correct answer
Explanation
The Konkan Coast is composed primarily of basalt and lava, which were formed by volcanic eruptions during the Cretaceous period.
The Chhotanagpur Plateau is primarily composed of which type of rocks?
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Gneiss and Schist
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Sandstone and Limestone
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Granite and Basalt
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Laterite and Alluvium
A
Correct answer
Explanation
The Chhotanagpur Plateau is composed primarily of gneiss and schist, which are metamorphic rocks formed from the transformation of pre-existing rocks under high temperature and pressure.
What is the composition of cometary dust?
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Ice
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Rock
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Metal
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All of the above
D
Correct answer
Explanation
Cometary dust is composed of a mixture of ice, rock, and metal.
What is the main type of rock found in the Vindhya Range?
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Granite
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Sandstone
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Limestone
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Basalt
B
Correct answer
Explanation
The main type of rock found in the Vindhya Range is sandstone.
Which of these is a metamorphic rock commonly found in safari regions?
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Granite
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Limestone
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Slate
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Sandstone
C
Correct answer
Explanation
Slate is a metamorphic rock formed from the transformation of clay-rich sediments under heat and pressure. It is commonly found in safari regions, often exhibiting distinct layering and a smooth, fine-grained texture.
Which of these is a sedimentary rock commonly formed from the accumulation of organic matter?
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Limestone
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Sandstone
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Coal
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Slate
C
Correct answer
Explanation
Coal is a sedimentary rock formed from the accumulation and compaction of plant matter over millions of years. It is a valuable energy resource and is commonly found in safari regions.
What is the process by which molten rock cools and solidifies, forming igneous rocks?
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Weathering
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Erosion
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Deposition
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Crystallization
D
Correct answer
Explanation
Crystallization is the process by which molten rock cools and solidifies, forming igneous rocks. As the molten rock cools, minerals crystallize, forming the characteristic textures and compositions of igneous rocks.
Which of these is a type of sedimentary rock formed from the accumulation of sand-sized particles?
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Limestone
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Sandstone
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Coal
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Slate
B
Correct answer
Explanation
Sandstone is a sedimentary rock formed from the accumulation and compaction of sand-sized particles. It is a common rock type found in safari regions and can exhibit various colors and textures.
Which of these is a type of igneous rock formed from the rapid cooling of lava on the Earth's surface?
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Granite
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Basalt
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Slate
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Sandstone
B
Correct answer
Explanation
Basalt is a type of igneous rock formed from the rapid cooling of lava on the Earth's surface. It is a common rock type in safari regions, often forming extensive lava flows and volcanic formations.
Which of these is a type of sedimentary rock formed from the accumulation of calcium carbonate, often derived from marine organisms?
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Limestone
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Sandstone
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Coal
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Slate
A
Correct answer
Explanation
Limestone is a type of sedimentary rock formed from the accumulation of calcium carbonate, often derived from marine organisms. It is a common rock type in safari regions and can exhibit various colors and textures.