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\ 15-Nov-2024 Surender Prajapati Proof-6 Reader’s Sign _______________________ Date __________

Chapter assessment
A. Choose the correct option.
48
1. in standard form is ...................... .
− 72

48
(a)    − 2   (b) −2 (c) 2 (d) 72
3
3
3
2. −4 can be expressed as a rational number with denominator –21 as ...................... .
7
(a) 12 (b) −12 (c) 12 (d) 4
21 −21 − 21 − 21
3. In the standard form of a rational number, the common factor of numerator and denominator is always

(a) 0 (b) 1 (c) –2 (d) 2
4. How many rational numbers are there between two rational numbers?
(a) 1 (b) 0 (c) unlimited (d) 100

5. Which of the following is equivalent to −4 ?
5
(a) 5 (b) 20 (c) −20 (d) −16
− 4 25 25 25
6. Additive inverse of −2 is
3
(a) 0 (b) 1 (c) 2 (d)   3  
3  − 2
p
7. A rational number is defined as a number that can be expressed in the form of , where p and q
q
are integers and

(a) q = 0 (b) q = 1 (c) q ≠ 1 (d) q ≠ 0
p
8. If p = m × t and q = n × t, then = ...................... .
q
m n
(a) (b) (c) t (d) 1
n m
B. Assertion and Reason Type Questions.
In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R).
Choose the correct option as:
(a) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

(b) Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of
Assertion (A).
(c) Assertion (A) is true but Reason (R) is false.

(d) Assertion (A) is false but Reason (R) is true.
−78 6
1. Assertion (A): The standard form of the rational number is .
−169 13
Reason (R): If the denominator of a rational number is negative, then to write its standard form
we multiply numerator and denominator by (–1) to make the denominator positive.

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