'This hydrocarbon mix obtained druing petroleum refining is used to make candles & to coat paper'
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SCIENCE FACTS: This hydrocarbon mix obtained druing petroleum refining is used to make candles & to coat paper
This hydrocarbon mix obtained druing petroleum refining is used to make candles & to coat paper
This hydrocarbon mix obtained druing petroleum refining is used to make candles & to coat paper
SCIENCE FACTS
paraffin
SCIENCE FACTS