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Rocks

44 MCQ questions with answers and explanations · page 1 of 2

Test yourself▶ 25 question test

Q1. There are approximately 2,000 types of minerals found on Earth, but only some of these minerals form rocks. How many of these minerals are there?

  1. A10
  2. B20
  3. C150
  4. D500
Show answer & explanation

Answer: B) 20

Q2. The rocks formed by the condensation of liquid substances of the earth are called-

  1. Aigneous
  2. Bsedimentary
  3. Ctransformed
  4. Dnone of these
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Answer: A) igneous

Q3. Which of the following is classified as a primary rock?

  1. Aigneous rocks
  2. Bsedimentary rocks
  3. Cmetamorphic rocks
  4. Dpenetrating
Show answer & explanation

Answer: A) igneous rocks

Q4. What is called igneous rock?

  1. Ahard rock
  2. BElemental rock
  3. Csecondary rock
  4. Dnone of these
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Answer: B) Elemental rock

Q5. Which of the following rocks is the oldest in terms of formation?

  1. Aigneous
  2. Bmetamorphosed
  3. Csedimentary
  4. Dsubaerial
Show answer & explanation

Answer: A) igneous

Q6. Igneous rocks are formed by -

  1. Acooling of hot lava
  2. Bby the fall of mountains
  3. Cby earthquake
  4. Dnone of these
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Answer: A) cooling of hot lava

Q7. Which of the following is measured by the Mohs scale?

  1. Adistances of celestial bodies
  2. Bspeed of flowing water
  3. Cspeed of aircraft and ships
  4. Dhardness of rocks
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Answer: D) hardness of rocks

Q8. Granite is counted among which type of rocks?

  1. Aigneous
  2. Bsedimentary
  3. Cmetamorphosed
  4. Dplutonic
Show answer & explanation

Answer: D) plutonic

Q9. Which of the following statements regarding igneous rocks is false?

  1. AIgneous rocks are completely devoid of layers.
  2. BCrystals are found in these rocks.
  3. CThese rocks lack fossils.
  4. DJoints are found in these rocks.
Show answer & explanation

Answer: D) Joints are found in these rocks.

Q10. The rock which is different from the rest -

  1. Aquartzite
  2. BGranite
  3. CNice
  4. Dmarble
Show answer & explanation

Answer: B) Granite

Q11. The huge dome-shaped igneous rock in the earth's crust is known by which of the following names?

  1. ABatholith
  2. BLaccolith
  3. CPhacolith
  4. DLopolith
Show answer & explanation

Answer: A) Batholith

Q12. In which type of rocks are the remains of animals, plants and microorganisms found?

  1. Aigneous
  2. Bmetamorphosed
  3. Csedimentary
  4. Dsubaerial
Show answer & explanation

Answer: B) metamorphosed

Q13. Which of the following rocks is found spread over the largest part of the surface?

  1. Aigneous
  2. Bsedimentary
  3. Cmetamorphosed
  4. Dnone of these
Show answer & explanation

Answer: B) sedimentary

Q14. What percentage of the Earth's surface is covered by sedimentary rocks?

  1. A70 percent
  2. B65 percent
  3. C70 percent
  4. D90 percent
Show answer & explanation

Answer: A) 70 percent

Q15. The contribution of sedimentary rocks in the structure of the earth's surface is -

  1. A5 percent
  2. B8 percent
  3. C10 percent
  4. D15 percent
Show answer & explanation

Answer: A) 5 percent

Q16. Which of the following rocks comes under organic rocks?

  1. Aquartzite
  2. Bmarble
  3. CCoal
  4. DGranite
Show answer & explanation

Answer: C) Coal

Q17. In which rock is coal found?

  1. AMetamorphic rock
  2. Bsedimentary rock
  3. Cabiotic rock
  4. Digneous rock
Show answer & explanation

Answer: B) sedimentary rock

Q18. In which rocks is petroleum found?

  1. Aigneous rock
  2. Bnew bedrock
  3. Cancient bedrock
  4. DMetamorphic rock
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Answer: C) ancient bedrock

Q19. Which of the following is not a sedimentary rock?

  1. Agram stone
  2. Bsandstone
  3. CShell
  4. Dquartzite
Show answer & explanation

Answer: D) quartzite

Q20. Which of the following is not a sedimentary rock?

  1. AGypsum
  2. Bconglomerate
  3. CDolomite
  4. DSlate
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Answer: D) Slate

Q21. Which of the following is a different type of rock?

  1. Asandstone
  2. Bgram stone
  3. Cmarble
  4. Dconglomerate
Show answer & explanation

Answer: C) marble

Q22. Which rock is formed in the interior of the Earth due to high heat and pressure?

  1. Aigneous rock
  2. Bsedimentary rock
  3. Cmetamorphic rock
  4. Dvolcanic rock
Show answer & explanation

Answer: C) metamorphic rock

Q23. Sandstone is converted into -

  1. AIn Nice
  2. Bin the cyst
  3. CIn quartzite
  4. DIn graphite
Show answer & explanation

Answer: C) In quartzite

Q24. The metamorphic form of limestone is -

  1. Amarble
  2. BSlate
  3. CGranite
  4. Dquartzite
Show answer & explanation

Answer: A) marble

Q25. Which of the following is a metamorphic rock?

  1. ANice
  2. BGranite
  3. CCoal
  4. Dgram stone
Show answer & explanation

Answer: A) Nice

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