Geography · Science General

Rocks and Earth Materials

1,291 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

Multiple choice geography asia : the largest continent - location and physical features location, political and physical division of asia introduction of the continents - africa and asia asia

Indian plateaus are made up of _______.

  1. igneous rocks

  2. metamorphic rocks

  3. shale

  4. sedimentary rocks
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Indian plateaus are made up of igneous rocks. Igneous rocks formed by the cooling and solidifying of molten materials . It can form beneath the Earth's surface , or at its surface, as lava. Deccan trap form the centre of igneous rocks in india.They cover almost all part of Maharashtra, a part of Gujrat, Madhya Pradesh , Andra Pradesh marginally. They are formed by sub - aerial volcanic activity associated with continental deviation in this part of earth in mesozoic era.

Multiple choice geography rocks and rock cycle rock cycle and uses of rocks rocks - introduction and importance lithosphere and asthenosphere

Rock cycle is a continuous chain through which  ___________________.

  1. old rock transforms into new rock

  2. new rock transforms into old rock

  3. weathering of rock happens

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Rocks do not remain in their original form for long but may undergo transformation. Rock cycle is a continuous process through which old rocks are transformed into new ones.

Multiple choice geography rocks and rock cycle rock cycle and uses of rocks rocks - introduction and importance lithosphere and asthenosphere

The igneous rocks are formed due to ____________.

  1. plate tectonic

  2. volcanic acitivity

  3. weathering

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Igneous rocks are of two types, extrusive and intrusive. Extrusive igneous rocks cool and solidify quicker than intrusive igneous rocks. They are formed by the cooling of molten magma on the earth's surface. The magma, which is brought to the surface through fissures or volcanic eruptions, solidifies at a faster rate.

Multiple choice geography rocks and rock cycle rock cycle and uses of rocks rocks - introduction and importance lithosphere and asthenosphere

The rock cycle is the process pass through formation of _______________.

  1. Sedimentary rock

  2. Metamorphic

  3. Igneous

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Rock cycle is the transition of rocks of 3 basic types viz igneous, sedimentary and metamorphic into each other in a cyclic manner.
  • Primary rock is an igneous rock which is formed after solidification of lava. It may then get eroded and settled as various layers to form sedimentary rocks. The sedimentary rocks get metamorphosised under high pressure and temperature beneath the earth crust which forms metamorphic rocks.
  • Finally, all types of rocks may get subducted deep inside the earth were under extreme temperatures they get melted leading to the formation of liquid magma and the cycle repeats.
  • Thus all options are part of this cycle and option D is correct.
Multiple choice geography rocks and rock types lithosphere and asthenosphere rocks and rock cycle introduction to rocks, volcanoes and earthquakes

Rocks are classified into ________________.

  1. Volcanic, sedimentary and organic

  2. Volcanic, igneous and sedimentary

  3. Metamorphic; sedimentary and aqueous

  4. Igneous, metamorphic, sedimentary and organic
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Rocks are basically classified as igneous, metamorphic and sedimentary rocks.
  • Organic rocks are a type of sedimentary rock which contain high amounts of organic carbon.
  • Hence option D is correct.
Multiple choice geography rocks and rock types lithosphere and asthenosphere rocks and rock cycle introduction to rocks, volcanoes and earthquakes

Contact metamorphism generally occurs near_____.

  1. igneous intrusions

  2. sediment extrusions

  3. igneous extrusions

  4. sediment intrusions
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Contact metamorphism is a type of metamorphism where the texture of rock minerals are changed by means of heat, due to contact with magma, which is generally an igneous intrusion, i.e; the formed magma is trapped beneath the Earth's surface.

Multiple choice geography rocks and rock types lithosphere and asthenosphere rocks and rock cycle introduction to rocks, volcanoes and earthquakes

Which one of the following statements is NOT correct?

  1. Black cotton soil of north-west India was formed by the weathering of basaltic lava rocks

  2. Sedimentary rocks are distinguished from other types of rocks by the presence of distinct layers

  3. Granite has large crystals of quartz, feldspar and mica in it

  4. A metamorphic rock is softer and less compact than its original type
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Metamorphic rocks are formed by the transformation of existing rocks under intense heat and pressure. This process typically makes them more compact and harder than their original parent rocks, not softer.

Multiple choice our neighbouring countries introduction to indian geography social studies general knowledge

Which one of the following is the appropriate reason for considering the Gondwana rocks are most important rock systems of India?

  1. Most than $90\%$ of limestone reserves of India are found in them
  2. More than $90\%$ of India's coal reserve are found in them
  3. More than $90\%$ of fertile black cotton soils are spread over them

  4. None of the reasons given above is appropriate in this context
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Gondwana rock system in India is primarily famous for containing the vast majority of the country's coal reserves, which were formed from ancient vegetation. Limestone is typically associated with other geological formations like the Vindhyan system.

Multiple choice landforms on earth and external processes general physical geography general knowledge

With respect to chemical weathering a denudational process, choose the correct statements.
(1) It may weaken or entirely dissolve certain constituent of rocks.
(2) In granite, which is made up of quartz feldspar and mica, feldspar easily weathers away.
(3) Loosened material, as in example of granite, quartz and mica are eroded.
(4) Weathered material as in case of granite, feldspar forms regolith, basis of soil.

  1. 1 and 2

  2. 2 and 3

  3. 1, 2 and 3

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Chemical weathering breaks down minerals like feldspar into clay (regolith), while quartz remains resistant. The loosened material is then susceptible to erosion. All statements provided are accurate descriptions of these processes.

Multiple choice geography plate tectonics lithosphere and asthenosphere rocks and rock cycle rocks and rock types

Igneous rocks that have the lowest content of silica are known as______

  1. felsic rocks

  2. porphyry

  3. mafic rocks

  4. ultramafic rocks
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ultramafic rocks are the igneous rocks that have the lowest content of silica.


Felsic rocks- rich in feldspar and silicon (igneous rock).

Porphyry- igneous rock having feldspar & quartz crystals.
Mafic rocks- igneous rocks rich in magnesium and iron.

Thus the answer is Ultramafic rocks.