S Purkayastha Solutions for Chapter: Rational Numbers, Exercise 1: Check Point

$1$ is the multiplicative identity of rational numbers.

The product of two rational numbers is always a rational number.

The multiplicative inverse of $\frac{7}{5}$ is $\frac{-7}{5}$

$0$ is its own reciprocal.

The product of a positive rational number and a negative rational number is always negative.

The reciprocal of $-1$ is $1$

The product of a rational number and its reciprocal is $1$

The product of two negative rational numbers is always negative.