Geography · 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

Multiple choice commercial applications treasure under the ground conservation of mineral resources distribution and conservation of mineral resources indian mineral and power resources

Name the rock which is made of one mineral ?

  1. Backlight

  2. Stone

  3. Gemstone

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

Limestone is a sedimentary rock composed primarily of calcium carbonate (CaCO3) in the form of the mineral calcite. It most commonly forms in clear, warm, shallow marine waters

Multiple choice commercial applications treasure under the ground conservation of mineral resources distribution and conservation of mineral resources indian mineral and power resources

Minerals are deposited and accumulated in the strata of which ofthe following rocks?

  1. Sedimentary rocks

  2. Metamorphic rocks

  3. Igneous rocks

  4. Solid rocks

  5. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In sedimentary rocks a number of minerals occur in beds or layers. They have been formed as a result of deposition, accumulation and concentration in horizontal strata. Coal and some forms of iron ore have been concentrated as a result of long periods under great heat and pressure. 

Multiple choice commercial applications treasure under the ground conservation of mineral resources distribution and conservation of mineral resources indian mineral and power resources

What are placer deposits?

  1. Metals that occur as sandy deposit in sands of sea floor.

  2. Metals that occur as sandy deposit in sands of land floor.

  3. Minerals that occur as alluvial deposit in sands of valley floor.

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

 Certain minerals may occur as alluvial deposits in sands of valley floors and the base of hills. These deposits are called ‘placer deposits’ and generally contain minerals, which are not corroded by water. Gold, silver, tin and platinum are most important among such minerals. 

Multiple choice

What causes a change in the appearance and composition of rocky material?

  1. physical weathering

  2. pressure changes

  3. chemical weathering

  4. temperature changes
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Chemical weathering involves a change in the chemical composition of the rock, often resulting in new minerals or a change in appearance, unlike physical weathering which only changes size or shape.

Multiple choice

Which of the following is an example of physical weathering?

  1. rocks changing color with oxidation

  2. soil moving to another area

  3. acid rain changing a rock's composition

  4. water breaking down a boulder into a stone
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Physical weathering is the mechanical breakdown of rock into smaller pieces without changing its chemical composition. Water breaking a boulder is a mechanical process.