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Question : 8
Total: 36
Select (i) combination reaction, (ii) decomposition reaction and (iii) displacement reaction from the following chemical equations :
(i)ZnCO 3 (s) → ZnO ( s ) + CO 2 (g)
(ii)Pb (s) + CuCl 2 (aq) → PbCl 2 (aq) + Cu (s)
(iii)NaBr ( aq ) + AgNO 3 (aq) → AgBr ( s)
+ NaNO 3 ( aq )
(iv)H 2 (g) + Cl 2 (g) → 2 HCl (g)
(v)Fe 2 O 3 + 2 Al → Al 2 O 3 + 2 Fe
(vi)3 H 2 ( g ) + N 2 ( g ) → 2 NH 3 ( g )
(vii)CaCO 3 (s)
CaO (s) + CO 2 (g)
(i)
(ii)
(iii)
(iv)
(v)
(vi)
(vii)
Solution:
(i) Decomposition reaction
(ii) Displacement reaction
(iii) Double displacement reaction
(iv) Combination reaction
(v) Displacement reaction
(vi) Combination reaction
(ii) Displacement reaction
(iii) Double displacement reaction
(iv) Combination reaction
(v) Displacement reaction
(vi) Combination reaction
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