Villagers in some parts of India use the water extract of the ash obtained by burning banana plant as a substitute of soda. Which one of the following is the major active component in the extract ?

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Q: 43 (CAPF/2009)
Villagers in some parts of India use the water extract of the ash obtained by burning banana plant as a substitute of soda. Which one of the following is the major active component in the extract ?
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question_subject: 

Science

question_exam: 

CAPF

stats: 

0,41,41,41,21,10,10

keywords: 

{'water extract': [0, 0, 1, 0], 'potassium carbonate': [0, 0, 2, 2], 'sodium carbonate': [0, 0, 0, 1], 'banana plant': [0, 0, 0, 1], 'calcium oxide': [0, 0, 0, 1], 'magnesium oxide': [0, 0, 2, 0], 'extract': [0, 0, 1, 1], 'ash': [0, 0, 0, 1], 'soda': [0, 0, 5, 5], 'substitute': [0, 0, 2, 1], 'major active component': [0, 0, 1, 0]}