MCQ Questions for Class 7 Maths: Ch 13 Exponents and Powers

MCQ Questions for Class 7 Maths: Ch 13 Exponents and Powers

1. The exponential form of 100000 is

(a) 10³

(b) 10⁴

(c) 10⁵

(d) none of these

► (c) 10⁵

2. The value of (−1)⁴⁷ is
(a) -1
(b) 1
(c) 0
(d) None of these
► (a) -1

3. The value of 2⁸ is
(a) 1024
(b) 256
(c) 512
(d) 128
► (b) 256

4. The value of 11⁰ is ________ .
(a) 3
(b) 11
(c) 1
(d) None of these
► (c) 1

5. Multiplicative inverse of 1/7 is

(a) 14

(b) 7

(c) 49

(d) None of these

► (b) 7

6. The value of (−1)⁷⁵ is

(a) 0

(b) 1

(c) -1

(d) None of these

► (c) -1

7. The value of (−1)⁵⁰⁰ is

(a) 1

(b) -1

(c) 0

(d) None of these

► (a) 1

8. The value of 7⁰ is ________ .
(a) 7
(b) 21
(c) 1
(d) None of these
► (c) 1

9. The value of (−1)⁴⁰⁰ is
(a) 1
(b) 0
(c) -1
(d) None of these
► (a) 1

10. The number which is multiplied by (−8)⁻¹ to obtain a product equal to 10⁻¹ is ____.
(a) −4/5
(b) −3/5
(c) −1/5
(d) −5/4
► (a) −4/5

11. 512 can be written in exponential form as
(a) 2³
(b) 2⁴
(c) 2⁹
(d) 2¹
► (c) 2⁹

12. The value of (−1)⁹¹ is
(a) 1
(b) 0
(c) -1
(d) None of these
► (c) -1

13. Express 729 as a power of 3.
(a) 9³
(b) 3⁴
(c) 3⁶
(d) 3²
► (c) 3⁶

14. Express 432 as a product of powers of prime factors.
(a) 2³×3³
(b) 8×27
(c) 16×27
(d) 2⁴×3³
► (d) 2⁴×3³

15. The value of (−1)³¹⁰ is
(a) 1
(b) -1
(c) 0
(d) None of these
►(a) 1

16. Multiplicative inverse of 1/5 is
(a) 10
(b) 3
(c) 5
(d) None of these
► (c) 5