Which of the following is not a rational number ?

Which of the following is true ?

Set of rational numbers under addition which of the following properties is hold ?

Set of rational numbers is not hold which of the following with respect to closure property ?

Which of the following is an additive identity element ?

Which of the following is a multiplicative identity element ?

Which of the following is a multiplicative inverse of $\frac{-3}{4}\backslash frac\{-3\}\{4\}$?

What is the additive inverse of $\frac{5}{6}\backslash frac\{5\}\{6\}$?

Which of the following is commutative property under multiplication ?

Which of the following is a multipli-cative distributive property over addition ?