Displacement reactions are opposite of combination reactions.
A. Only (I)
B. Only (II)
C. Both (I) and (III)
D. Both (II) and (IV)
Answer:A
Displacement reactions are opposite of combination reactions.
A. Only (I) B. Only (II) C. Both (I) and (III) D. Both (II) and (IV)
Explanation: Precipitation reactions are the reactions in which an insoluble substance or precipitate is formed. Neutralization reactions are the reactions between an acid and a base and are double displacement reactions. Decomposition reactions require energy in the form of heat, light or electricity. Decomposition reactions are the opposite of combination reactions.