Which one of the following statements is correct ? The velocity of sound :

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Q: 23 (CDS-I/2016)

Which one of the following statements is correct ? The velocity of sound :
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question_subject: 

Science

question_exam: 

CDS-I

stats: 

0,30,37,11,7,19,30

keywords: 

{'velocity': [0, 2, 2, 6], 'sound': [4, 3, 10, 15], 'solids': [0, 0, 0, 4], 'liquids': [0, 0, 0, 1], 'gases': [0, 0, 5, 12], 'minimum': [0, 0, 0, 4], 'media': [2, 0, 0, 2]}