19. Match the items of Column-I with the items of the Column-II.
Column-I Column-II
a. NH40H + CH3COOH (i) Thermal decomposition
→CH3COONH4 + H2O
b. 2AgBr → 2Ag + Br2 (ii) Thermit reaction
c. Znco3 →Zno + CO2 (iii) Photochemical reaction
d. 2AI + Fe20 3 → 2Fe (iv) Neutralization reaction
+ AI20 3 (NTSE Stage-II, 2014-15)