Question map
Not attempted Correct Incorrect ★ Bookmarked
Loading…
Q32 (CDS-I/2004) Geography › World Physical Geography › Rocks and minerals Answer Verified

Which of the following statements is wrong?

Result
Your answer: —  Â·  Correct: B
Explanation

Statement 2 is incorrect because the oceanic crust (sea-floor) is significantly younger than the continental crust (land). Scientific evidence shows that oceanic crust is continuously recycled into the mantle through subduction, meaning it is nowhere older than approximately 200 million years [1][t1]. In contrast, continental rocks are more stable and can be as old as 3,200 to 4,000 million years [1][t2]. Statement 1 is correct as stalactites and stalagmites are calcium carbonate (lime) deposits formed by mineral precipitation in caves [t5][t7]. Statement 3 is correct because the Earth's first rocks were igneous, formed from the cooling and solidification of molten magma [c4][t3]. Statement 4 is correct as sedimentary rocks are frequently termed 'aqueous' rocks when formed through the agency of water, which transports and deposits the constituent sediments [t3].

Sources

  1. [1] FUNDAMENTALS OF PHYSICAL GEOGRAPHY, Geography Class XI (NCERT 2025 ed.) > Chapter 4: Distribution of Oceans and Continents > p. 30
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.
75%
got it right
✓ Thank you! We'll review this.

SIMILAR QUESTIONS

NDA-II · 2015 · Q39 Relevance score: 2.09

Which one of the following combinations of stalactites and stalagmites occurrences is correct?

NDA-II · 2019 · Q106 Relevance score: -2.43

Stalactite, Stalagmite and Pillars are the depositional landforms of

IAS · 2003 · Q145 Relevance score: -2.88

Which one of the following statements is not correct?

NDA-I · 2024 · Q140 Relevance score: -3.27

Consider the following statements about Ajanta paintings : 1. The surface of the rock was coated with clay mixed with rice husk and gum and a coat of lime was applied over this. 2. The outline drawing was done first on the lime coating and colours were added subsequently. Which of the statements given above is/are correct ?

IAS · 2013 · Q29 Relevance score: -3.53

With reference to the history of Indian rock-out architecture, consider the following statements: 1. The caves at Badami are the oldest surviving rock-cut caves in India. 2. The Barabar rock-out caves were originally made for Ajivikas by Emperor Chandragupta Maurya. 3. At Ellora, caves were made for different faiths. Which of the statements given above is/are correct?