In this reaction a scheme of a chemical reaction. the reactants are two molecules, one of which consists of a and b, and the other consists of c and d. the products are two molecules, one of which consists of a and c, and the other consists of b and d. the energy of molecules ab and cd is higher than the energy of molecules ac and bd.
(a)- the products have been rearranged to form reactants
(b)-the products have less potential energy than the reactants
(c)-cd is a product
(d)-ac is a reactant
(e)-entropy has decreased

The answer to your question is: correct answer is A

Explanation:

Reaction

                  AB   +   CD   ⇒    AC   +   BD

(a)- the products have been rearranged to form reactants  This option is correcrt because it is a double substitution reaction, and the reactants interchange cations and anions to form new compounds.

(b)-the products have less potential energy than the reactants  I think this option is wrong because products have less activation energy than the reactants not potential energy.

(c)-CD is a product  This option is wrong, CD is a reactant

(d)-AC is a reactant  This option is wrong, AC is a product

(e)-entropy has decreased , to know this we the data, and the question do not give enough information about this.

state the principle of separating two immiscible liquids by separating funnel. describe an activity with diagram to separate a mixture of water and kerosene oil. answer: immiscible layers separate out in layers depending on their densities in separating funne