Answer:

i) true, because if we find √2 the result is 1.41421356 which can't be express in p/q form and the numbers which can not be write in p/q form is called irrational number.

ii)false, because if we find √4 the result is 2 and it can be written as 2/1 (p/q) so it's not an irrational number.

iii) false, 3 can be written as 3/1 so it is a rational number not an irrational.

iv) false, 0 can be written as 0/1 and the rational numbers are those number who can be written in p/q form and q≠0 ,and in this statement q is 1 so it is rational number not an irrational

• hope it's helpful for you