Which one of the following statements is corrcct ?

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Q: 29 (NDA-II/2016)

Which one of the following statements is corrcct ?

question_subject: 

Geography

question_exam: 

NDA-II

stats: 

0,9,18,7,4,10,6

keywords: 

{'spring balance': [0, 0, 0, 2], 'balance': [0, 0, 1, 1], 'measurement': [0, 1, 1, 3], 'mass': [0, 0, 2, 3], 'acceleration': [0, 0, 2, 8], 'gravity': [0, 0, 0, 6], 'spring': [0, 0, 1, 1]}