If you’re looking for a way to enhance your Class 8 Maths, then look no further than the NCERT MCQ Questions for Class 8 Maths Chapter 12 Exponents and Powers with Answers. The MCQ Questions for Class 8 Maths with Answers are aligned to all topics covered so it will be helpful when preparing for your exams, no matter what subject you’re studying! Don’t forget about scoring maximum points during exam preparation by using these free Class 8 Maths Chapter 12 Exponents and Powers Objective Questions.
Exponents and Powers Class 8 MCQs Questions with Answers
What are you waiting for? Get all the answers to Class 8 Maths Chapter 12 MCQs! It’s time that students power up and start practicing these MCQ Questions of Exponents and Powers Class 8 with answers. The best way of doing so would be solving them yourself in order not only to know which answer is correct but also to understand why each solution works as well.
Question 1.
The value of 72 is
(a) 7
(b) 49
(c) 2
(d) 14
Answer
Answer: (b) 49
Question 2.
16 is the multiplicative inverse of
(a) 2-4
(b) 28
(c) 82
(d) 24
Answer
Answer: (a) 2-4
Question 3.
In 102 the base is
(a) 1
(b) 0
(c) 10
(d) 100
Answer
Answer: (c) 10
Question 4.
Charge of an electron is 0.000,000,000,000,000,000,16 coulomb and in exponential form it can be written as
(a) 16 × 10-18 coulomb
(b) 1.6 × 10-21 coulomb
(c) 1.6 × 10-19 coulomb
(d) 16 × 10-21 coulomb
Answer
Answer: (c) 1.6 × 10-19 coulomb
Question 5.
Evaluate the exponential expression (−n)4× (−n)2, for n = 5.
(a) 25
(b) 15625
(c) 3125
(d) 625
Answer
Answer: (b) 15625
Question 6.
Value of (30 + 20) × 50 is
(a) 1
(b) 25
(c) 2
(d) 0
Answer
Answer: (c) 2
Question 7.
When we have to add numbers in standard form, we convert them into numbers with the ________ exponents.
(a) same
(b) different
(c) not equal
(d) None of these
Answer
Answer: (a) same
Question 8.
Fill in the blank am × an = a …….. where m and n are natural numbers:-
(a) mn
(b) m + n
(c) m – n
(d) \(\frac { m }{ n }\)
Answer
Answer: (b) m + n
Question 9.
Very small numbers can be expressed in standard form using __________ exponents.
(a) equal
(b) negative
(c) positive
(d) none of these
Answer
Answer: (b) negative
Question 10.
Multiplicative inverse of 7-2 is _________
(a) 49
(b) 5
(c) 7
(d) -14
Answer
Answer: (a) 49
Question 11.
The value of 10000 is
(a) 0
(b) 1000
(c) 1
(d) None of these
Answer
Answer: (c) 1
Question 12.
The standard form of 9030000000 is given by
(a) 9.03 × 109
(b) 90.3 × 107
(c) 903 × 106
(d) 9.03 × 10-9
Answer
Answer: (a) 9.03 × 109
Question 13.
The multiplicative inverse of 2-3 is
(a) 2
(b) 3
(c) 3
(d) 23
Answer
Answer: (d) 23
Question 14.
Find the value of the expression a2 for a = 10.
(a) 100
(b) 1
(c) 10
(d) None of these
Answer
Answer: (a) 100
Question 15.
Evaluate exponential expression − 25.
(a) 15
(b) -32
(c) 16
(d) none of these
Answer
Answer: (b) -32
Question 16.
In exponential form 149,600,000,000 m is given by :
(a) 1.496 × 1011 m
(b) 1.496 × 108 m
(c) 14.96 × 108 m
(d) 14.96 × 1011 m
Answer
Answer: (a) 1.496 × 1011 m
Question 17.
The value of 30 is ________.
(a) 0
(b) 3
(c) 1
(d) None of these
Answer
Answer: (c) 1
Question 18.
The value of (\(\frac { 1 }{ 3 }\))-2 is equal to
(a) 9
(b) 1
(c) -6
(d) 1/3
Answer
Answer: (a) 9
Question 19.
The Base in the expression 1024 is __________.
(a) 1
(b) 10
(c) 0
(d) 24
Answer
Answer: (b) 10
Question 20.
(am)n is equal to
(a) am+n
(b) am-n
(c) amn
(d) an-m
Answer
Answer: (c) amn
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