# MCQ Questions for Class 8 Maths Chapter 12 Exponents and Powers with Answers

We have compiled the NCERT MCQ Questions for Class 8 Maths Chapter 12 Exponents and Powers with Answers Pdf free download covering the entire syllabus. Practice MCQ Questions for Class 8 Maths with Answers on a daily basis and score well in exams. Refer to the Exponents and Powers Class 8 MCQs Questions with Answers here along with a detailed explanation.

## Exponents and Powers Class 8 MCQs Questions with Answers

Choose the correct option.

Question 1.
The value of ($$\frac {3}{5}$$)³ × ($$\frac {3}{5}$$)4 × ($$\frac {3}{5}$$)² is …………
(a) ($$\frac {3}{5}$$)9
(b) ($$\frac {3}{5}$$)5
(c) ($$\frac {3}{5}$$)4
(d) ($$\frac {3}{5}$$)5

Answer: (a) ($$\frac {3}{5}$$)9

Question 2.
The value of (3° + 5°) × 2² is.
(a) 8
(b) $$\frac {3}{4}$$
(c) 12
(d) 0

Question 3.
Which of the following is the value of ‘m’ in 9m ÷ 9-3 = 95?
(a) – 3
(b) – 2
(c) 3
(d) 2

Question 4.
Which of the following is the standard form of 0.00001275?
(a) 1.275 × 105
(b) 1.275 × 10-5
(c) 127.5 × 10-7
(d) 127.107

Question 5.
Which of the following is the reciprocal of ($$\frac {-3}{4}$$)
(a) $$\frac {-4}{3}$$
(b) $$\frac {4}{3}$$
(c) -1
(d) 1

Answer: (a) $$\frac {-4}{3}$$

Question 6.
If (-2)m+1 × (-2)4 = (-2)6 then the value of m is
(a) 0
(b) 1
(c) -1
(d) 4

Question 7.
The value of (2° + 3° + 5°) is equal to
(a) 2
(b) 3
(c) 1
(d) 4

Question 8.
2.1 × 10-6 is equal to
(a) 0.0000021
(b) 0.00002.1
(c) 0.00021
(d) 0.0021

Question 9.
The standard form of 0.0016 is equal to
(a) 1.6 × 10-3
(b) 1.6 × 10-2
(c) 1.6 × 10-4
(d) 1.6 × 10-5

Question 10.
Which of the following is the value of
(a) 0
(b) -1
(c) 1
(d) none of these

Question 11.
Which of the following is the value of’m’ in
6m ÷ 6-3 = 65
(a) -3
(b) -2
(c) 3
(d) 2

Fill in the blanks

Question 1.
The value of x + x³ × x is ……………….. where x = 5

Question 2.
The reciprocal of (-$$\frac {1}{5}$$)-1 ÷ ($$\frac {1}{30}$$)° is ………………

Answer: –$$\frac {1}{5}$$

Question 3.
The value of x, when 72x+1 ÷ 49 = 7³ is ………………….

Question 4.
The value of ($$\frac {2}{3}$$)-2 is ………………….

Answer: $$\frac {9}{4}$$