समुद्र - खर-पतवार का प्रमुख – McqOptions

MCQOPTIONS

1.	समुद्र - खर-पतवार का प्रमुख स्रोत हैं
A.	क्लोरीन
B.	ब्रोमिन
C.	आयोडीन
D.	लोहा
Answer» D. लोहा

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