Question
Match column A and column B and choose the right code :
Column AColumn B
1. Addition reaction(a) $\begin{array}{c} Ca ( s )+2 H _2 O ( l ) \longrightarrow  Ca ( OH )_2( aq )+ H _2(g)\end{array}$
2. Decomposition reaction(b) $C ( s )+ O _2(g) \longrightarrow CO _2(g)$
3. Displacement reaction(c) $\begin{array}{r}2 H _2 O (l) \longrightarrow 2 H _2(g)+ O _2(g)\end{array}$
4. Disproportionation reaction(d) $\begin{aligned} 2 H _2 O _2( aq ) \longrightarrow & 2 H _2 O ( l ) & + O _2(g)\end{aligned}$

Answer

(1) (b), (2) (c), (3) (a), (4).(d)

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