. Which one of the following substances is not a mixture? *
Petrol
Crude oil
Air
Water
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Cʀᴜᴅᴇ ᴏɪʟ ɪs ᴄᴏʀʀᴇᴄᴛ ᴀɴsᴡᴇʀ.
ᴍᴀʀᴋ ᴀs ʙʀᴀɪɴʟɪsᴛ
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