Question

which of the following is correct answer?​

Answer 1

Answer:

option (c) is corrct okkk

Answer 2

Double displacement reaction is only (ii).

• A double displacement reaction is a type of chemical reaction in which the reactant species exchange their ions to form new products.
• Reaction(i) is a single displacement reaction in which only one of the reacting ions is displaced.
• In the given reaction (i), Chloride ions from CuCl2 get displaced to Pb to form PbCl2.
• Reaction (iii) is a combination reaction since two reactants react to form a single product.
• Reaction (iv) is a combustion reaction. Methane burns in oxygen to produce carbon dioxide and water.