MULTIPLE CHOICE QUESTIONS CLASS 8 CHAPTER : RATIONAL NUMBERS 1. 1. What should be added to -5/4 to get -1? 1-1/4 II. III. 1 IV. -3/4 2. What should be subtracted from -5/4 to get -1? 1. -1/4 II. % III. 1 IV. -3/4 3. Which of the following is the identity element? II. -1 III. O IV. None of these 4. Which of the following is the Multiplicative identity for rational numbers? I. 1 II. -1 III. O IV. None of these 5. Which of the following is neither appositive nor a negative rational number? I. 1 II. 0 III. Such a rational number doesn't exist IV. None of these 1. 1 6. Which of the following lies between 0 and -1? 1.0 II. -3 III. -2/3 IV. 4/3 7. Which of the following is the reciprocal of a? (a is not 0 ) I. a II. A III. 1/a IV. -1/a 8. Which of the following is the product of 7/8 and -4/21? I. -1/6 II. 1/12 III. -16/63 IV. -147/16 9. Which of the following is the product of (-718) and 4/21? I. -1/6 II. 12 III. -63/16 IV. -16/147 10. Which of the following is the reciprocal of the reciprocal of a rational number? II. 1 III. O IV. The number itself 1.-1
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Step-by-step explanation:
1. What should be added to -5/4 to get -1?
I. -1/4
II. 1/4
III. 1
IV. -3/4
2. What should be subtracted from -5/4 to get -1?
I. -1/4
II. 1/4
III. 1
IV. -3/4
3. Which of the following is the identity element?
I. 1
II. -1
III. 0
IV. None of these
4. Which of the following is the Multiplicative identity for rational numbers?
I. 1
II. -1
III. 0
IV. None of these
5. Which of the following is neither appositive nor a negative rational number?
I. 1
II. 0
III. Such a rational number doesn�t exist
IV. None of these
6. Which of the following lies between 0 and -1?
I. 0
II. -3
III. -2/3
IV. 4/3
7. Which of the following is the reciprocal of �a�?
I. �a
II. a
III. 1/a
IV. -1/a
8. Which of the following is the product of 7/8 and -4/21?
I. -1/6
II. 1/12
III. -16/63
IV. -147/16
9. Which of the following is the product of (-7/8) and 4/21?
I. -1/6
II. 12
III. -63/16
IV. -16/147
10. Which of the following is the reciprocal of the reciprocal of a rational number?
I. -1
II. 1
III. 0
IV. The number itself
ANSWERS
1. (II)
2. (I)
3. (III)
4. (I)
5. (II)
6. (III)
2. 7. (III)
8. (I)
9. (I)
10. (IV)
Step-by-step explanation:
1 (II)
2(I)
3(III)
4(I)
5(II)
6(III)
7(III)
8(I)
9(I)
10(IV)