When one strikes a safety match, the first step is

examrobotsa's picture
Q: 47 (NDA-II/2016)
When one strikes a safety match, the first step is

question_subject: 

Science

question_exam: 

NDA-II

stats: 

0,16,24,7,10,20,3

keywords: 

{'red phosphorus': [0, 0, 0, 3], 'white phosphorus': [0, 0, 0, 1], 'potassium chlorate': [0, 0, 0, 3], 'potassium chloride': [1, 0, 1, 3], 'glue': [0, 0, 0, 1], 'safety match': [0, 0, 0, 1], 'sulfur': [0, 0, 0, 4], 'first step': [2, 0, 1, 1], 'oxygen': [3, 0, 1, 0], 'starch': [1, 0, 0, 0]}