Which of the following are not compounds? 

(a) Chlorine gas 

(b) Potassium chloride 

(c) Iron 

(d) Iron sulphide 

(e) Aluminium 

(f) Iodine 

(g) Carbon 

(h) Carbon monoxide

(i) Sulphur powder

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1 Answers

Chlorine gas, Iron, Aluminium, Iodine, Carbon, Sulphur powder.

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