Which of the following are combination reactions ? (i) 2KClO3 -> 2KCl + 3O2 (ii) MgO + H2O -> Mg(OH)2 (iii) 4Al + 3O2…

CBSE Class 10 Science PYQ · Chemical Reactions and Equations · Combination reactions · 1 Mark · March 2026 · Standard

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51 Mark · March 2026 · Standard
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) $\ce{Zn + FeSO4 -> ZnSO4 + Fe}$
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(D) / (ii)and (iii)
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