Q: 37 (NDA-I/2008)


Which one of the following elements can not displace hydrogen gas from a dilute acid?
question_subject: 
Science
question_exam: 
NDA-I
stats: 
0,8,34,8,8,15,11
keywords: 
{'hydrogen gas': [0, 0, 1, 2], 'elements': [0, 0, 2, 5], 'zinc': [1, 0, 0, 2], 'magnesium': [1, 0, 2, 3], 'copper': [1, 0, 1, 1], 'iron': [0, 0, 1, 1]}

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