Question

Which of the following is not an “element + element → compound” type reaction?

विकल्प

• C_(s) + O_2(g) → CO_2(g)

• 2K_(s) + Br_2(l) → 2KBr_(s)

• 2CO_(g) + O_2(g) → 2CO_2(g)

• 4Fe_(s) + 3O_2(g) → 2Fe₂O_3(s)

Answer 1

2CO_(g) + O_2(g) → 2CO_2(g)