The majority of Earths crust is composed of which rock ?

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Q: (SSC/0)
The majority of Earth’s crust is composed of which rock ?
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question_subject: 

Geography

question_exam: 

SSC

stats: 

0,23,13,23,3,9,1

keywords: 

{'crust': [1, 1, 0, 0], 'sedimentary': [0, 0, 0, 1], 'igneous': [2, 0, 0, 1], 'rock': [0, 0, 0, 1], 'earth': [0, 1, 1, 1], 'carbonate': [1, 0, 0, 0], 'metamorphic': [2, 0, 0, 2]}