A. nitrogen and oxygen
B. carbon (IV) oxide and oxygen
C. noble gases and carbon (IV) oxide
D. oxygen and noble gases

Correct Answer:

Option B – carbon (IV) oxide and oxygen

SEE ALSO  Two-organic substances are labelled K and L if K gave a blue-black colour with iodine solution and L gave a deep red precipitate with Million's reagent, it can be concluded that

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