CBSE Class 10 Science Exam 2014 Term 1 Paper

© examsnet.com
Question : 8
Total: 36
Select (i) combination reaction, (ii) decomposition reaction and (iii) displacement reaction from the following chemical equations :
(i) ZnCO3 (s) ZnO( s)+CO2 (g)
(ii) Pb (s) +CuCl2 (aq) PbCl2 (aq) +Cu (s)
(iii) NaBr(aq)+AgNO3 (aq) AgBr( s)
+NaNO3(aq)
(iv) H2 (g) +Cl2 (g) 2HCl (g)
(v) Fe2O3+2AlAl2O3+2Fe
(vi) 3H2(g)+N2(g)2NH3(g)
(vii) CaCO3 (s)
Heat
CaO
(s) +CO2 (g)
Solution:  
(i) Decomposition reaction
(ii) Displacement reaction
(iii) Double displacement reaction
(iv) Combination reaction
(v) Displacement reaction
(vi) Combination reaction
© examsnet.com
Go to Question: