Chemical Reactions and Equations Q19 — Class 10 Chemistry Solution

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Chemistry Chemical Reactions and Equations CBSE Board 2026 Easy

Which of the following are decomposition reactions ?

(i) $2 KClO_{3} ⟶ 2 KCl + 3 O_{2}$
(ii) $MgO + H_{2} O ⟶ Mg(OH)_{2}$
(iii) $2 H_{2} O ⟶ H_{2} + O_{2}$
(iv) $Zn + CuSO_{4} ⟶ ZnSO_{4} + Cu$ Options :

(a)(i) and (ii)
(b)(iii) and (iv)
(c)(i) and (iii)
(d)(ii) and (iv)

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