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Consider the following statements.
1. By plucking, the glacier scratches, scrapes, polishes and scours the valley floor with the debris frozen into it. 
2. By abrasion the glacier freezes the joints and beds of the underlying rocks, tears out individual blocks and drags them away 
Which of these statements is/are correct?
  • a)
    1 only
  • b)
    2 only
  • c)
    Both of them
  • d)
    Neither of them
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Consider the following statements.1. By plucking, the glacier scratche...
Explanation:

The correct answer is option D, neither of them. None of the statements is correct.

Let's analyze each statement:

1. By plucking, the glacier scratches, scrapes, polishes, and scours the valley floor with the debris frozen into it.

Plucking is a process by which a glacier erodes the underlying rocks by freezing onto them and then pulling them out as the glacier moves. However, plucking does not involve scratching, scraping, polishing, or scouring the valley floor. These processes are more closely associated with abrasion, which is the grinding action of rocks and debris carried by the glacier against the valley floor. Plucking and abrasion are distinct processes, and the statement incorrectly combines the two.

2. By abrasion, the glacier freezes the joints and beds of the underlying rocks, tears out individual blocks, and drags them away.

Abrasion is the process by which rocks and debris carried by a glacier scrape and grind against the valley floor, causing erosion. However, the statement is incorrect in stating that the glacier freezes the joints and beds of the underlying rocks. Freezing of joints and beds is associated with frost wedging, which is a process that occurs in cold climates when water seeps into cracks in rocks and freezes, causing the cracks to widen and eventually break apart. The tearing out of individual blocks and dragging them away is more closely associated with plucking, not abrasion.

In summary, statement 1 incorrectly combines plucking and abrasion processes, and statement 2 incorrectly attributes freezing of joints and beds to abrasion. Therefore, neither of the statements is correct.
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Community Answer
Consider the following statements.1. By plucking, the glacier scratche...
 
  • The glacier scratches, scrapes, polishes, and scours the valley floor with the debris frozen into it by abrasion. 
  • By plucking the glacier freezes the joints and beds of the underlying rocks, tears out individual blocks and drags them away.
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Consider the following statements.1. By plucking, the glacier scratches, scrapes, polishes and scours the valley floor with the debris frozen into it.2. By abrasion the glacier freezes the joints and beds of the underlying rocks, tears out individual blocks and drags them awayWhich of these statements is/are correct?a)1 onlyb)2 onlyc)Both of themd)Neither of themCorrect answer is option 'D'. Can you explain this answer?
Question Description
Consider the following statements.1. By plucking, the glacier scratches, scrapes, polishes and scours the valley floor with the debris frozen into it.2. By abrasion the glacier freezes the joints and beds of the underlying rocks, tears out individual blocks and drags them awayWhich of these statements is/are correct?a)1 onlyb)2 onlyc)Both of themd)Neither of themCorrect answer is option 'D'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Consider the following statements.1. By plucking, the glacier scratches, scrapes, polishes and scours the valley floor with the debris frozen into it.2. By abrasion the glacier freezes the joints and beds of the underlying rocks, tears out individual blocks and drags them awayWhich of these statements is/are correct?a)1 onlyb)2 onlyc)Both of themd)Neither of themCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements.1. By plucking, the glacier scratches, scrapes, polishes and scours the valley floor with the debris frozen into it.2. By abrasion the glacier freezes the joints and beds of the underlying rocks, tears out individual blocks and drags them awayWhich of these statements is/are correct?a)1 onlyb)2 onlyc)Both of themd)Neither of themCorrect answer is option 'D'. Can you explain this answer?.
Solutions for Consider the following statements.1. By plucking, the glacier scratches, scrapes, polishes and scours the valley floor with the debris frozen into it.2. By abrasion the glacier freezes the joints and beds of the underlying rocks, tears out individual blocks and drags them awayWhich of these statements is/are correct?a)1 onlyb)2 onlyc)Both of themd)Neither of themCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for UPSC. Download more important topics, notes, lectures and mock test series for UPSC Exam by signing up for free.
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