question_subject:
Science
question_exam:
IAS
stats:
0,78,31,8,78,20,3
keywords:
{'chemical change': [0, 0, 3, 7], 'sodium chloride': [1, 0, 0, 1], 'examples': [1, 0, 1, 5], 'crystallization': [0, 0, 0, 7], 'example': [18, 0, 1, 11], 'souring': [0, 0, 0, 1], 'ice': [0, 0, 1, 0], 'none': [2, 0, 8, 15]}