Is zero rational or irrational

Answer 1

Zero is several sorts of numbers. It is actually both. "Real numbers", "Rational numbers", "Irrational Numbers", "integers", "trancendental numbers", "cardinal numbers" and so forth, all have their own definitions. These definitions define a SET of numbers. A single number can belong to several SETs.

Real numbers are numbers that can be written as an infinite decimal expansion. It includes numbers like fractions eg 1/7 and PI. Real numbers can also be split into algebraic and transcendental numbers but the definition is too complicated here. 0 is a member of this SET

Rational numbers work out to be the same but there is a slightly different definition. 0 is a member of this SET

Irrational numbers belong to the set of two dimensional numbers of the vector form a + b x i where i is the square root of -1. 0 = 0 + 0 x i so zero is also a member of this SET

Integers are the set of normal counting numbers both positive, negative and 0.

I have not included any more here because they are a part of number theory and not part of a discussion on logic (SETs).
No, it is a rational number.