Fill in the blanks:

(i) $-\dfrac{7}{8} + \dfrac{2}{11} = \dfrac{2}{11} + \left(-\dfrac{7}{8}\right)$ depicts ……… property of addition of rational numbers.

(ii) The multiplicative inverse of a rational number is also called its ………

(iii) The multiplicative inverse of a negative rational number is a ……… rational number.

(iv) The numbers ……… and ……… are their own reciprocals.

(v) $\left(-\dfrac{10}{11}\right) \div$ ……… = 1

(vi) $\left(-\dfrac{7}{9}\right) \times$ ……… = 1

(vii) Among $-\dfrac{5}{11}, \dfrac{-5}{13} \text{ and } \dfrac{-5}{7}$ the greatest rational number is ………

Write true (T) or false (F):

(i) Every rational number has a reciprocal.

(ii) Subtraction of rational numbers is commutative.

(iii) The additive inverse of $\dfrac{1}{4}$ is -4.

(iv) $\dfrac{5}{0}$ is a rational number.

(v) 0 is the smallest rational number.

(vi) The multiplicative inverse of $\dfrac{-4}{-9}$ is $\dfrac{9}{4}$.

(vii) There are countless rational numbers between $\dfrac{2}{3} \text{ and } \dfrac{5}{6}$.

Assertion (A): The negative (additive inverse) of -5 is 5 and the negative of 5 is -5.

Reason (R): The negative of a negative rational number is negative and the negative of a positive rational number is negative.

1. Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

2. Both Assertion (A) and Reason (R) are true and Reason (R) is not the correct explanation of Assertion (A).

3. Assertion (A) is true but Reason (R) is false.

4. Assertion (A) is false but Reason (R) is true.

Assertion (A): For any rational numbers x, y, z, we have, x × (y + z) = x × y + x × z.

Reason (R): Rational numbers are associative under addition and multiplication.

1. Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

2. Both Assertion (A) and Reason (R) are true and Reason (R) is not the correct explanation of Assertion (A).

3. Assertion (A) is true but Reason (R) is false.

4. Assertion (A) is false but Reason (R) is true.