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
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
Answer
Answer: (a) 8
Question 3.
Which of the following is the value of ‘m’ in 9m ÷ 9-3 = 95?
(a) – 3
(b) – 2
(c) 3
(d) 2
Answer
Answer: (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
Answer
Answer: (b) 1.275 × 10-5
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
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
Answer
Answer: (b) 1
Question 7.
The value of (2° + 3° + 5°) is equal to
(a) 2
(b) 3
(c) 1
(d) 4
Answer
Answer: (b) 3
Question 8.
2.1 × 10-6 is equal to
(a) 0.0000021
(b) 0.00002.1
(c) 0.00021
(d) 0.0021
Answer
Answer: (a) 0.0000021
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
Answer
Answer: (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
Answer
Answer: (b) -1
Question 11.
Which of the following is the value of’m’ in
6m ÷ 6-3 = 65
(a) -3
(b) -2
(c) 3
(d) 2
Answer
Answer: (d) 2
Fill in the blanks
Question 1.
The value of x + x³ × x is ……………….. where x = 5
Answer
Answer: 630
Question 2.
The reciprocal of (-\(\frac {1}{5}\))-1 ÷ (\(\frac {1}{30}\))° is ………………
Answer
Answer: –\(\frac {1}{5}\)
Question 3.
The value of x, when 72x+1 ÷ 49 = 7³ is ………………….
Answer
Answer: 2
Question 4.
The value of (\(\frac {2}{3}\))-2 is ………………….
Answer
Answer: \(\frac {9}{4}\)
Question 5.
The value of ‘m’ when 6m ÷ 6-3 = 65 is ……………………..
Answer
Answer: 2
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