question_subject:
Geography
question_exam:
NDA-I
stats:
0,53,20,1,53,13,6
keywords:
{'refining': [0, 0, 0, 1], 'fractional distillation': [0, 0, 1, 0], 'petroleum': [3, 1, 3, 10], 'evaporation': [0, 0, 0, 4], 'techniques': [0, 1, 1, 2], 'funnel': [1, 0, 0, 2], 'sublimation': [1, 0, 3, 6]}