Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है
SubjectsGeography
प्लेट विवर्तनिकी और भारतीय प्लेट की गति
In this Class 11 Geography topic from “Distribution of Oceans and Continents,” students learn how plate tectonics explains the changing arrangement of continents and ocean basins. They study the structure and movement of lithospheric plates, the major types of plate boundaries, and the forces linked to their motion. The topic traces the Indian plate’s journey from Gondwana, its northward movement, and its collision with the Eurasian plate, connecting these processes with the formation of the Himalayas, earthquakes, and volcanism.
Correct answer: A. Southern Asia and Tibetan region
Explanation: The collision of the Indian Plate caused major uplift in southern Asia and Tibet. Exam tip: link regional effect with Himalaya Tibet.
Correct answer: B. It explains plate movement and boundary processes
Explanation: Plate tectonics explains movement of both continents and oceanic crust. Exam tip: remember the difference between idea and mechanism.
Correct answer: C. Mountain building and seismicity
Explanation: At the convergent boundary of Indian and Eurasian plates both Himalayas and earthquakes are linked. Exam tip: identify results together.
Correct answer: D. From rocks fossils and sea-floor evidence
Explanation: Geological evidence indicates old position and movement. Exam tip: do not depend on only one evidence.
Correct answer: A. Compression
Explanation: During a continental collision, two continental plates move toward each other and exert strong horizontal pressure on the crust. Because continental crust is relatively buoyant, it is not easily forced deep into the mantle. Instead, the crust is shortened, thickened, and bent into folds. This bending under strong squeezing force is most directly linked with compression. Therefore, option A is correct.
Evaporation concerns liquid changing into vapour, weathering is the breakdown of rocks at the surface, and salinity describes the amount of dissolved salt in water. None of these explains the formation of folded crust during plate collision. Compression can produce folds, faults, uplift, and mountain building, which is why major fold mountains are associated with continental convergence. The key relationship to remember is: collision creates squeezing pressure, and squeezing pressure causes folding.
Correct answer: A. The northward push of the Indian Plate continues
Explanation: The pressure of the Indian Plate still affects the Himalayan region. Exam tip: link present uplift with active collision.
Correct answer: A. Because they are linked with the global plate movement system
Explanation: Himalayan earthquakes are part of a larger plate system. Exam tip: see both local impact and global cause.
Correct answer: B. The Indian Eurasian collision would not occur so the Himalayas would not form
Explanation: Himalayan formation depends on the northward collision of the Indian Plate. Exam tip: connect cause and effect directly.
Correct answer: A. They can indicate timing and direction of plate movement
Explanation: Magnetic stripes give a record of sea-floor spreading. Exam tip: remember them as evidence of plate movement.
Correct answer: A. Mid-oceanic ridges and divergent movement
Explanation: The direct answer is A. During the northward movement of the Indian Plate, new oceanic crust formed at divergent mid-oceanic ridges. At a divergent boundary, plates move apart, hot mantle material rises, and it cools to create fresh oceanic crust. Sea-floor spreading at these ridges helped move the Indian Plate northward before its collision with Eurasia. A correctly joins the place and process: mid-oceanic ridges and divergent movement. B is wrong because Himalayan rivers do not create oceanic crust. C is wrong because desert winds cannot produce new tectonic crust. D is wrong because coastal sand is a surface sediment, not newly formed oceanic lithosphere. The reasoning chain is: plates diverge at a ridge → magma rises → new oceanic crust forms → spreading contributes to plate movement. Memory cue: divergent ridge builds new ocean floor; convergent collision builds mountains.
Correct answer: A. Because tectonic pressure and earthquakes still occur there
Explanation: Active compression and seismicity occur in the Himalayan region. Exam tip: connect active mountains with present movement.
Correct answer: B. Himalayan mountains
Explanation: Tethys sediments were folded by compression and contributed to Himalayan formation. Exam tip: remember Tethys sediments with the Himalayas.
Correct answer: A. The Himalaya is near an active convergent plate boundary
Explanation: The Himalaya lies in the active contact zone of the Indian and Eurasian plates. Exam tip: link seismicity with plate boundaries.
Correct answer: A. It shows that India did not remain fixed
Explanation: India’s position changed over geological time. Exam tip: understand the difference between old maps and present position.
Correct answer: A. Earth’s outer rigid layer is divided into moving plates
Explanation: The journey of the Indian Plate shows that plates change position over long time. Exam tip: understand the theory through the Indian example.
Correct answer: A. Indian Ocean region
Explanation: India’s separation and northward movement were linked with the expansion of the Indian Ocean region. Exam tip: keep Indian Plate and Indian Ocean together.
Correct answer: A. Pressure keeps accumulating over long geological time
Explanation: Even slow movement can create major changes over millions of years. Exam tip: time scale is very important.
Correct answer: A. Because the Himalayas and Tibetan uplift are linked with this collision
Explanation: Collision with Asia is a major result of the Indian Plate journey. Exam tip: remember Himalayan formation as the final result.
Correct answer: B. Deccan Traps are linked with large basaltic eruptions
Explanation: Deccan Traps are linked with extensive volcanic lava flows. Exam tip: understand them as volcanic landforms.
Correct answer: C. Continental convergent boundary
Explanation: The continental collision of India and Eurasia formed the Himalayas. Exam tip: treat it as an example of continental convergence.
Correct answer: A. India was once connected with other Gondwana parts
Explanation: Fossil and rock similarities can show old continental connections. Exam tip: link evidence with Gondwana connection.
Correct answer: A. Both show effects of the same collision zone
Explanation: The collision of the Indian Plate affected both the Himalayas and Tibetan Plateau. Exam tip: understand regional uplift broadly.
Correct answer: A. They can indicate past latitudinal position from magnetic signals in rocks
Explanation: Magnetic signals preserved in rocks can indicate past positions. Exam tip: remember palaeomagnetism as evidence of plate movement.
Correct answer: A. One plate going below another plate
Explanation: The direct answer is A. Subduction is the process in which one tectonic plate moves beneath another plate and sinks into the deeper Earth. It commonly occurs at a convergent boundary, especially where a denser oceanic plate meets another plate. This movement can produce trenches, earthquakes and volcanic activity. Option A is correct because it gives the basic meaning exactly. Option B is wrong: plates do not rise into the air as the definition of subduction. Option C is wrong because rainfall is an atmospheric water process, not plate movement. Option D is wrong because a mountain cannot become a river; erosion may carry mountain material into rivers, but that is not subduction. Memory cue: subduction means “sub” or below—one plate goes below another.
Correct answer: A. Separation from Gondwana and northward movement led to collision with Asia
Explanation: The main sequence of the Indian Plate journey is separation movement and collision. Exam tip: keep the cause-effect order clear.
Student feedback
👍 0 Helpful 👎 0 Not helpful
Yes 0% No 0%
0 responsesNo published reviews yet.
