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Question : Which one of the following is not a compound?

Option 1: Sodium Chloride

Option 2: Carbon Monoxide

Option 3: Iron

Option 4: Water


Team Careers360 22nd Jan, 2024
Answer (1)
Team Careers360 25th Jan, 2024

Correct Answer: Iron


Solution : The correct answer is Iron.

Pure iron is not a compound. Since iron is made up of just one kind of atom, Fe, it is classified as an element. A material must have two or more chemically bonded elements to be classified as a compound. Sodium chloride: NaCl, Carbon monoxide: CO, Water: H 2 O. These compounds consist of sodium and chlorine, carbon and oxygen and hydrogen and oxygen, respectively.

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