5
Which of the following are combination reactions ?
(i) $\ce{2KClO3 -> 2KCl + 3O2}$
(ii) $\ce{MgO + H2O -> Mg(OH)2}$
(iii) $\ce{4Al + 3O2 -> 2Al2O3}$
(iv) $\ce{Zn + FeSO4 -> ZnSO4 + Fe}$
Options:
(i) $\ce{2KClO3 -> 2KCl + 3O2}$
(ii) $\ce{MgO + H2O -> Mg(OH)2}$
(iii) $\ce{4Al + 3O2 -> 2Al2O3}$
(iv) $\ce{Zn + FeSO4 -> ZnSO4 + Fe}$
Options:
- (a)(i) and (iii)
- (b)(iii) and (iv)
- (c)(ii) and (iv)
- (d)(ii) and (iii)
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(D) / (ii)and (iii)