question_subject:
Science
question_exam:
NDA-I
stats:
0,18,25,18,14,7,4
keywords:
{'ammonium carbonate': [0, 0, 0, 1], 'ammonium ion': [0, 0, 0, 1], 'molecular formula': [0, 0, 0, 1], 'carbonate anion': [0, 0, 0, 1], 'nh4c03': [0, 0, 0, 1], 'valency': [0, 0, 0, 1]}