[{"text": "Read the following passage carefully and answer questions 46-50.
The earth's crust averages 16 miles thick and rests on what is called the mantle. This layer, about 750 miles thick, is believed to be of a semi-viscous or plastic nature rather than solid. Thus, both continental and oceanic areas could be said to float on the mantle, with continental areas pushing deeper into the mantle than do oceanic areas where the crust is thinner.
Constant erosion moves dirt and rock into ocean areas where they settle. These areas gradually sink deeper into the mantle, eventually creating pressures that thrust new land up from surrounding areas. Mountains formed by this process are made of sedimentary rock and are called folded or dome. Earthquakes occur where the crust shifts or creaks apart sharply under pressure; the resulting breaks or fissures are called faults. Mountains created by these faults are called fault blocks.
In weak spots on the earth's crust - generally near sea coast - gases and monte rock under tremendous pressure break through to form shaped mountains. These we know as volcanoes.
No sooner are new mountains and flatlands created by pressure then water, ice, and wind begin to wear them away, thus creating new valleys, river course and coastline. ", "type": "text_block", "database_type": "", "university": "", "year": "", "unit": "", "shift": "", "subject": "", "chapter": "", "topic": ""}, {"question": "46. The first paragraph is mainly about the earth's _____\u00a0", "mark": 1.0, "answer": "one", "explanation": "![](\"https://testmozusercontent.com/ugc/2023-07-02/0286f973-0f58-48b3-92e2-6e0a34c47a37-image.png\"/)
", "options": [{"option": "continents\u00a0", "answer": false}, {"option": "crust\u00a0", "answer": true}, {"option": "mantle\u00a0", "answer": false}, {"option": "oceans\u00a0", "answer": false}], "type": "question", "database_type": "qb", "university": "ju", "year": "2018-19", "unit": "f", "shift": "2", "subject": "e-a", "chapter": "e-4", "topic": "", "title": "46. The first paragraph is mainly about the earth's _____\u00a0", "full_question": "46. The first paragraph is mainly about the earth's _____\u00a0
[E-4,\u00a0JU-F2 : 2018-19]
"}, {"question": "47. The writer uses the word ' float' to describe the way-\u00a0", "mark": 1.0, "answer": "one", "explanation": "![](\"https://testmozusercontent.com/ugc/2023-07-02/b2e3e848-53f4-4993-892a-8c79758c73ea-image.png\"/)
", "options": [{"option": "dirt and rocks erode into the sea\u00a0", "answer": false}, {"option": "land and water areas rest on the mantle\u00a0", "answer": false}, {"option": "the mantle rests on the earth's core\u00a0", "answer": false}, {"option": "water areas drift onto the mainland\u00a0", "answer": true}], "type": "question", "database_type": "qb", "university": "ju", "year": "2018-19", "unit": "f", "shift": "2", "subject": "e-b", "chapter": "e-40", "topic": "", "title": "47. The writer uses the word ' float' to describe the way-\u00a0", "full_question": "47. The writer uses the word ' float' to describe the way-\u00a0[E-40,\u00a0JU-F2 : 2018-19]
"}, {"question": "48. The mantle is ___\u00a0", "mark": 1.0, "answer": "one", "explanation": "![](\"https://testmozusercontent.com/ugc/2023-07-02/47b54b26-8328-4168-8256-1da75cc3115b-image.png\"/)
", "options": [{"option": "a flexible substance under the crust\u00a0", "answer": false}, {"option": "a solid layer of the earth's crust\u00a0", "answer": true}, {"option": "a thin layer of earth under the ocean\u00a0", "answer": false}, {"option": "the semi-solid exterior of the earth\u00a0", "answer": false}], "type": "question", "database_type": "qb", "university": "ju", "year": "2018-19", "unit": "f", "shift": "2", "subject": "e-b", "chapter": "e-40", "topic": "", "title": "48. The mantle is ___\u00a0", "full_question": "48. The mantle is ___\u00a0[E-40,\u00a0JU-F2 : 2018-19]
"}, {"question": "49. The second paragraph states that eroded material created pressure in ocean areas, causing the formation of-\u00a0", "mark": 1.0, "answer": "one", "explanation": "![](\"https://testmozusercontent.com/ugc/2023-07-02/7fe2cb1d-af80-4a00-b8d4-797dcc8feeda-image.png\"/)
", "options": [{"option": "continental areas\u00a0", "answer": false}, {"option": "dome mountains\u00a0", "answer": false}, {"option": "fault blocks\u00a0", "answer": true}, {"option": "fissure reefs\u00a0", "answer": false}], "type": "question", "database_type": "qb", "university": "ju", "year": "2018-19", "unit": "f", "shift": "2", "subject": "e-b", "chapter": "e-40", "topic": "", "title": "49. The second paragraph states that eroded material created pressure in ocean areas, causing the formation of-\u00a0", "full_question": "49. The second paragraph states that eroded material created pressure in ocean areas, causing the formation of-\u00a0[E-40,\u00a0JU-F2 : 2018-19]
"}, {"question": "50. Conical shaped mountains are composed of ___\u00a0", "mark": 1.0, "answer": "one", "explanation": "![](\"https://testmozusercontent.com/ugc/2023-07-02/1675350c-bfde-41f0-a14a-7f996f8a658f-image.png\"/)
", "options": [{"option": "pressure\u00a0", "answer": false}, {"option": "rock\u00a0", "answer": false}, {"option": "gases and molten rock\u00a0", "answer": true}, {"option": "sedimentary rock\u00a0", "answer": false}], "type": "question", "database_type": "qb", "university": "ju", "year": "2018-19", "unit": "f", "shift": "2", "subject": "e-a", "chapter": "e-4", "topic": "", "title": "50. Conical shaped mountains are composed of ___\u00a0", "full_question": "50. Conical shaped mountains are composed of ___\u00a0[E-4,\u00a0JU-F2 : 2018-19]
"}]
Explanation: