Earthquake (shock) waves are

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Q: 12 (CDS-II/2009)
Earthquake (shock) waves are
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question_subject: 

Science

question_exam: 

CDS-II

stats: 

0,41,60,41,48,3,9

keywords: 

{'waves': [0, 0, 3, 0], 'infrasonic waves': [0, 0, 1, 2], 'ultrasonic waves': [0, 0, 0, 5], 'infrared waves': [0, 0, 0, 1], 'ultraviolet waves': [0, 0, 1, 2], 'earthquake': [2, 0, 2, 0], 'shock': [0, 0, 2, 0]}