Let's analyze each statement:

A. Tertiary alcohols undergo Dehydration reaction when heated with Cu at 573 K: This statement is not  true. Tertiary alcohols can be oxidized when heated with copper at high temperatures.

B. Salicylic acid is 2-hydroxybenzoic acid: This statement is true. Salicylic acid is indeed 2-hydroxybenzoic acid.

C. Ease of dehydration of alcohols is in the order primary > secondary > tertiary: This statement is false. The ease of dehydration of alcohols is in the order tertiary > secondary > primary because tertiary alcohols form more stable carbocations.

D. Electrophile attacks at o- and p- position in anisole. COOH: This statement is true. Anisole is a specific compound, and the COOH mentioned seems unrelated. However, an electrophile can indeed attack the o- and p- positions in the benzene ring of anisole, leading to the formation of different products.

E. Aspirin is C9H8O4

therefore statement A and B are correct .