Question map
Not attempted Correct Incorrect ★ Bookmarked
Loading…
Q34 (CAPF/2023) Geography › World Physical Geography › Rocks and minerals

Consider the following statements about rock structure: 1. Conglomerates are clastic sedimentary rocks. 2. Slate is a non-clastic sedimentary rock. 3. Granite is a plutonic igneous rock. 4. Basalt is an extrusive igneous rock. Which of the statements given above are correct?

Result
Your answer: —  Â·  Correct: D
Explanation

Statement 1 is correct as conglomerates are mechanically formed (clastic) sedimentary rocks composed of coarse-grained fragments like pebbles [3][4]. Statement 2 is incorrect because slate is a metamorphic rock formed from the transformation of clay or shale under heat and pressure, not a sedimentary rock [1][4]. Statement 3 is correct; granite is a plutonic (intrusive) igneous rock that solidifies slowly beneath the Earth's surface [2]. Statement 4 is correct as basalt is a common extrusive (volcanic) igneous rock that forms from lava cooling rapidly on the surface [3]. Therefore, statements 1, 3, and 4 are accurate descriptions of rock structures and classifications. Clastic rocks are specifically defined by the accumulation of fragments from pre-existing rocks, while plutonic and extrusive terms describe the cooling environment of igneous bodies.

Sources

  1. [3] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 13: Types of Rocks & Rock Cycle > 13.2. Sedimentary Rocks or Detrital Rocks > p. 171
  2. [4] Certificate Physical and Human Geography , GC Leong (Oxford University press 3rd ed.) > Chapter 2: The Earth's Crust > METAMORPHIC ROCKS > p. 19
  3. [1] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 13: Types of Rocks & Rock Cycle > Some Examples of Metamorphosis > p. 174
  4. [2] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 6: Soils > Parent Material > p. 1
How others answered
Each bar shows the % of students who chose that option. Green bar = correct answer, blue outline = your choice.
Community Performance
Out of everyone who attempted this question.
0%
got it right
✓ Thank you! We'll review this.

SIMILAR QUESTIONS

NDA-II · 2010 · Q11 Relevance score: 2.17

Consider the following statements about rocks I. Shale becomes slate through metamorphosis II. Shale is converted to slate when it is subjected to tremendous pressure and high temperature Which of the statements given above is/are correct ?

NDA-I · 2008 · Q81 Relevance score: 1.94

Consider the following statements : 1. Coal is a sedimentary rock. 2. Basalt is an igneous rock. Which of the statements given above is/are correct?

IAS · 2001 · Q88 Relevance score: 1.44

Consider the following statements made about the sedimentary rocks : I. Sedimentary rocks are formed at Earth’s surface by the hydrological system. II. The formation of sedimentary rocks involves the weathering of pre-existing rocks. III. Sedimentary rocks contain fossils. IV. Sedimentary rocks typically occur in layers. Which of these statements are correct ?

NDA-I · 2022 · Q88 Relevance score: 0.64

Consider the following statements : 1. Rocks do not remain in their original form for long and undergo transformation. 2. Transformation of rocks is caused by weathering, erosion and metamorphic action. Which of the statements given above is/are correct?

IAS · 2001 · Q55 Relevance score: 0.55

Consider the following statements : I. Most magmas are a combination of liquid, solid and gas. II. Water vapour and carbon dioxide are the principal gases dissolved in a magma. III. Basaltic magma is hotter than the silicic magma. IV. The magma solidified between sedimentary rocks in a horizontal position is known as dike. Which of these statements are correct ?