Teaching EMRS TGT Mock Test 2023 General Science Chemistry Chemical Reaction

Which of the following are combination reactions?

(i) 2KClO3 \(\rm \xrightarrow{Heat}\) 2KCl + 3O2

(ii) MgO + H2O → Mg(OH)2

(iii) 4Al + 3O2 → 2Al2 O3

(iv) Zn + FeSO4 → ZnSO4 + Fe

1
(i) and (iii)
2
(iii) and (iv)
3
(ii) and (iv) 
4
(ii) and (iii)
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