Q: 1 (NDA-II/2008)

The deficiency of which one of the following leads to dental caries?
question_subject: 
Science
question_exam: 
NDA-II
stats: 
0,45,14,6,3,45,5
keywords: 
{'dental caries': [0, 0, 2, 0], 'deficiency': [5, 0, 10, 2], 'zinc': [1, 0, 0, 2], 'fluorine': [0, 0, 0, 1], 'iron': [0, 0, 1, 1], 'copper': [1, 0, 1, 1]}

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