The ambient air quaility standard (24 hours average) for lead in industrial area is

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Q: 99 (SSC/NA)
The ambient air quaility standard (24 hours’ average) for lead in industrial area is
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question_subject: 

Science

question_exam: 

SSC

stats: 

0,3,4,0,3,1,3

keywords: 

{'ambient air quaility standard': [1, 0, 0, 0], 'average': [1, 1, 0, 1], 'lead': [7, 1, 11, 11], 'hours': [7, 2, 16, 9], 'm3': [1, 2, 2, 1]}