Examples are given in plural form

Plural nouns are used when we give examples or mention things in general.

These are the examples to the statement I have made above.

1 Housewives like to buy things such as brushes, brooms, knives, forks and spoons at the shop because these are sold at reasonable prices.
[In this sentence, the examples are given in bold prints.]

2 We do not like apples because they are acidic. [Apples are used to refer to things in general.]