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Online Education MCQ Questions for Class 7 Maths Chapter 13 Exponents and Powers with Answers

April 11, 2022

Check the below Online Education NCERT MCQ Questions for Class 7 Maths Chapter 13 Exponents and Powers with Answers Pdf free download. MCQ Questions for Class 7 Maths with Answers were prepared based on the latest exam pattern. We have provided Exponents and Powers Class 7 Maths MCQs Questions with Answers to help students understand the concept very well. https://ncertmcq.com/mcq-questions-for-class-7-maths-with-answers/

Students can also refer to NCERT Solutions for Class 7 Maths Chapter 13 Exponents and Powers for better exam preparation and score more marks.

Online Education for Exponents and Powers Class 7 MCQs Questions with Answers

Exponents And Powers Class 7 MCQ Question 1.
The exponential form of 10000 is
(a) 10³
(b) 10⁴
(c) 10⁵
(d) none of these

Answer

Answer: (b) 10⁴
Hint:
10000 = 10 × 10 × 10 × 10 = 10⁴

MCQ On Exponents And Powers For Class 7 Question 2.
The exponential form of 100000 is
(a) 10³
(b) 10⁴
(c) 10⁵
(d) none of these

Answer

Answer: (c) 10⁵
Hint:
100000 = 10 × 10 × 10 × 10 × 10 = 10⁵

Class 7 Exponents And Powers MCQ Question 3.
The exponential form of 81 is
(a) 3⁴
(b) 3³
(c) 3²
(d) none of these

Answer

Answer: (a) 3⁴
Hint:
81 = 3 × 3 × 3 × 3 = 3⁴

MCQ Questions For Class 7 Maths Exponents And Powers Question 4.
The exponential form of 125 is
(a) 5⁴
(b) 5³
(c) 5²
(d) none of these

Answer

Answer: (b) 5³
Hint:
125 = 5 × 5 × 5 = 5³

MCQ Of Exponents And Powers Class 7 Question 5.
The exponential form of 32 is
(a) 2³
(b) 2⁴
(c) 2⁵
(d) none of these

Answer

Answer: (c) 2⁵
Hint:
32 = 2 × 2 × 2 × 2 × 2 = 2⁵

Exponents And Powers MCQ Class 7 Question 6.
The exponential form of 243 is
(a) 3⁵
(b) 3⁴
(c) 3³
(d) 3²

Answer

Answer: (a) 3⁵
Hint:
243 = 3 × 3 × 3 × 3 × 3 = 3⁵

MCQ Questions On Exponents And Powers For Class 7 Question 7.
The exponential form of 64 is
(a) 2⁵
(b) 2⁶
(c) 2⁷
(d) 2⁸

Answer

Answer: (b) 2⁶
Hint:
64 = 2 × 2 × 2 × 2 × 2 × 2 = 2⁶

Class 7 Maths Exponents And Powers MCQ Question 8.
The exponential form of 625 is
(a) 5²
(b) 5³
(c) 5⁴
(d) 5⁵

Answer

Answer: (c) 5⁴
Hint:
625 = 5 × 5 × 5 × 5 = 5⁴

Class 7 Exponents And Powers Extra Questions MCQ Question 9.
The exponential form of 1000 is
(a) 10¹
(b) 10²
(c) 10³
(d) 10⁴

Answer

Answer: (c) 10³
Hint:
1000 = 10 × 10 × 10 = 10³

Class 7 Maths Chapter 13 MCQ Question 10.
The value of (- 2)³ is
(a) 8
(b) -8
(c) 16
(d) -16

Answer

Answer: (b) -8
Hint:
(-2)³ = (-2) × (-2) × (-2) = -8

MCQ On Indices For Class 7 Question 11.
The value of (- 2)⁴ is
(a) 8
(b) -8
(c) 16
(d) -16

Answer

Answer: (c) 16
Hint:
(-2)⁴ = (-2) × (-2) × (-2) × (-2) = 16

MCQ Exponents And Powers Class 7 Question 12.
What is the base in 8²?
(a) 8
(b) 2
(c) 6
(d) 10

Answer

Answer: (a) 8

Exponents And Powers Class 7 MCQ With Answers Question 13.
What is the exponent in 8²?
(a) 8
(b) 2
(c) 16
(d) 6

Answer

Answer: (b) 2

MCQ Questions For Class 7 Maths Chapter 13 Question 14.
(-1)^{even number} =
(a) -1
(b) 1
(c) 0
(d) none of these

Answer

Answer: (b) 1

Class 7 Maths Chapter 13 Extra Questions Question 15.
(-1)^{odd number} =
(a) -1
(b) 1
(c) 0
(d) none of these

Answer

Answer: (a) -1

Question 16.
0 × 10⁴ =
(a) 0
(b) 10⁴
(c) 1
(d) none of these

Answer

Answer: (a) 0

Question 17.
If 2³ × 2⁴ = 2^?, then ? =
(a) 3
(b) 4
(c) 1
(d) 7

Answer

Answer: (d) 7
Hint:
2³ × 2⁴ = 2³⁺⁴ = 2⁷

Question 18.
If (- 3)⁴ × (-3)⁶ = (-3)^?, then ? =
(a) 4
(b) 10
(c) 6
(d) 12

Answer

Answer: (b) 10
Hint:
(-3)⁴ × (-3)⁶ = (-3)⁴⁺⁶ = (-3)¹⁰

Question 19.
2⁷ ÷ 2³ =
(a) 2⁴
(b) 2¹⁰
(d) 2
(d) \(\frac { 1 }{ 2 } \)

Answer

Answer: (a) 2⁴
Hint:
2⁷÷ 2³ = 2^7-3 = 2⁴

Question 20.
10⁶ ÷ 10⁵ =
(a) 10¹
(b) 10⁵
(c) 10⁶
(d) 10¹¹

Answer

Answer: (a) 10¹
Hint:
10⁶ ÷ 10⁵ = 10^6-5 = 10¹

Question 21.
b × b × b × b × b =
(a) b⁵
(b) b⁴
(c) b⁶
(d) b³

Answer

Answer: (a) b⁵

Question 22.
(-5)⁴ =
(a) 125
(b) 625
(c) 375
(d) 125

Answer

Answer: (b) 625
Hint:
(-5)⁴ = (-5) × (-5) × (-5) × (-5) = 625

Question 23.
a^m × aⁿ =
(a) a^m+n
(b) a^m-n
(c) a^mn
(d) a^m/n

Answer

Answer: (a) a^m+n

Question 24.
am ÷ an =
(a) a^m+n
(b) a^m-n
(c) a^mn
(d) a^m/n

Answer

Answer: (b) a^m-n

Question 25.
(2²)³ =
(a) 2²
(b) 2³
(c) 2¹
(d) 2⁶

Answer

Answer: (d) 2⁶
Hint:
(22)³ = 2^2×3 = 2⁶

Question 26.
(5²)¹⁰ =
(a) 5²
(b) 5²⁰
(c) 5¹⁰
(d) 5⁵

Answer

Answer: (b) 5²⁰
Hint:
(5²)¹⁰ = 5^2×10 = 5²⁰

Question 27.
(a^m)ⁿ =
(a) a^m+n
(b) a^m-n
(c) a^mn
(d) a^m/n

Answer

Answer: (c) a^mn

Question 28.
If a is any non-zero integer, then a⁰ =
(a) a
(b) 0
(c) 1
(d) none of these

Answer

Answer: (c) 1

Question 29.
3⁰ =
(a) 0
(b) 1
(c) 3
(d) none of these

Answer

Answer: (b) 1

Question 30.
3⁰ × 4⁰ × 5⁰ =
(a) 1
(b) 3
(c) 4
(d) 5

Answer

Answer: (a) 1
Hint:
3⁰ × 4⁰ × 5⁰ = 1 × 1 × 1 = 1

Question 31.
(2⁰ + 3⁰) × 4⁰ =
(a) 1
(b) 2
(c) 3
(d) 4

Answer

Answer: (b) 2
Hint:
(2⁰ + 3⁰) × 4⁰ = (1 + 1) × 1 = 2

Question 32.
3⁰ + 4⁰ + 5⁰ =
(a) 1
(b) 2
(c) 3
(d) none of these

Answer

Answer: (c) 3
Hint:
3⁰ + 4⁰ + 5⁰ = 1 + 1 + 1 = 3

Question 33.
Which of the following is true?
(a) 2⁰ = (100)⁰
(b) 10² × 10⁸ = 10¹⁶
(c) 2² × 3³ = 65
(d) 2³ > 3²

Answer

Answer: (a) 2⁰ = (100)⁰
Hint:
2⁰ = (100)⁰ = 1

Question 34.
(2² × 2)² =
(a) 2³
(b) 2⁴
(c) 2⁵
(d) 2⁶

Answer

Answer: (d) 2⁶
Hint:
(2² × 2)² = (2²⁺¹)² = (2³)² = 2^3×2 = 2⁶

Question 35.
\(\frac { { 3 }^{ 8 } }{ { 3 }^{ 5 }\times { 3 }^{ 3 } } =\)
(a) 1
(b) 3
(c) 5
(d) 8

Answer

Answer: (a) 1
Hint:
\(\frac{3^8}{3^5×3^3}\) = \(\frac{3^8}{3^{5+3}}\) = \(\frac{3^8}{3^8}\) = 1

Question 36.
(\(\frac { { a }^{ 4 } }{ { a }^{ 2 } } \times { a }^{ 3 }=\))
(a) a⁴
(b) a⁵
(c) a⁶
(d) a⁸

Answer

Answer: (b) a⁵
Hint:
(\(\frac{a^4}{a^2}\)) × a³ = a^4-2 × a³ = a² × a³
= a²⁺³ = a⁵

Question 37.
82 ÷ 24 =
(a) 1
(b) 2
(c) 3
(d) 4

Answer

Answer: (d) 4
Hint:
8² + 2⁴ = \(\frac{(2×2×2)^2}{2^4}\) = \(\frac{(2^3)^2}{2^4}\)
= \(\frac{2^{3×2}}{2^4}\) = \(\frac{2^6}{2^4}\) = 2^6-4 = 2² = 4

Question 38.
(-2a)³ =
(a) 2a³
(b) 4a³
(c) 8a³
(d) -8a³

Answer

Answer: (d) -8a³
Hint:
(-2a)³ = (-2a) × (-2a) × (-2a) = -8a³

Question 39.
a^m ÷ b^m =
(a) a^m b^m
(b) (\(\frac { a }{ b } \))^m
(c) \(\frac { a }{ b } \)
(d) 1

Answer

Answer: (b) (\(\frac { a }{ b } \))^m

Question 40.
(ab)^m =
(a) a^m b^m
(b) a^mb
(c) ab^m
(d) ab

Answer

Answer: (a) a^m b^m

Question 41.
333 in standard form is
(a) 3.33 × 10²
(b) 3.33 × 10³
(c) 3.33 × 10¹
(d) 3.33 × 10⁴

Answer

Answer: (a) 3.33 × 10²

Question 42.
6000 in standard form is
(a) 6 × 10³
(b) 6 × 10⁶
(c) 6 × 10⁴
(d) 6 × 10⁵

Answer

Answer: (a) 6 × 10³

Question 43.
3430000 in standard form is
(a) 3.43 × 10⁶
(b) 3.43 × 10⁴
(c) 3.43 × 10²
(d) 3.43 × 10¹⁰

Answer

Answer: (a) 3.43 × 10⁶

Question 44.
1353000000 in standard form is
(a) 1.353 × 10⁹
(b) 1.353 × 10⁶
(c) 1.353 × 10³
(d) 1.353 × 10¹²

Answer

Answer: (a) 1.353 × 10⁹

Question 45.
100000000000 in standard form is
(a) 1 × 10⁸
(b) 1 × 10⁹
(c) 1 × 10¹⁰
(d) 1 × 10¹¹

Answer

Answer: (d) 1 × 10¹¹

We hope the given NCERT MCQ Questions for Class 7 Maths Chapter 13 Exponents and Powers with Answers Pdf free download will help you. If you have any queries regarding Exponents and Powers CBSE Class 7 Maths MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.

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

April 11, 2022

Check the below Online Education NCERT MCQ Questions for Class 8 Maths Chapter 12 Exponents and Powers with Answers Pdf free download. MCQ Questions for Class 8 Maths with Answers were prepared based on the latest exam pattern. We have provided Exponents and Powers Class 8 Maths MCQs Questions with Answers to help students understand the concept very well. https://ncertmcq.com/mcq-questions-for-class-8-maths-with-answers/

Students can also refer to NCERT Solutions for Class 8 Maths Chapter 12 Exponents and Powers for better exam preparation and score more marks.

Online Education for Exponents and Powers Class 8 MCQs Questions with Answers

Exponents And Powers Class 8 MCQ Question 1.
a^m x a^m is equal to
(a) a^m+n
(b) a^m-n
(c) a^mn
(d) a^n-m

Answer

Answer: (a) a^m+n
Hint:
Formula

MCQ On Exponents And Powers For Class 8 Question 2.
a^m ÷ aⁿ is equal to
(a) a^m-n
(b) a^m+n
(c) a^mn
(d) a^n-m

Answer

Answer: (a) a^m-n
Hint:
Formula

Class 8 Maths Chapter 12 MCQ Question 3.
(a^m)ⁿ is equal to
(a) a^m+n
(b) a^m-n
(c) a^mn
(d) a^n-m

Answer

Answer: (c) a^mn
Hint:
Formula

Class 8 Exponents And Powers MCQ Question 4.
a^m × b^m is equal to
(a) (ab)^m
(b) (ab)^-m
(c) a^m b
(d) ab^m

Answer

Answer: (a) (ab)^m
Hint:
Formula

MCQ Of Exponents And Powers Class 8 Question 5.
a⁰ is equal to
(a) 0
(b) 1
(c) -1
(d) a.

Answer

Answer: (b) 1
Hint:
Formula

Exponents And Powers MCQ Class 8 Question 6.
\(\frac{a^m}{b^m}\) is equal to bm
(a) (\(\frac{a}{b}\))^m
(b) (\(\frac{b}{a}\))^m
(c) (\(\frac{a^m}{b}\))^m
(d) (\(\frac{a}{b^m}\))^m

Answer

Answer: (a) (\(\frac{a}{b}\))^m
Hint:
Formula

MCQ Questions On Exponents And Powers For Class 8 Question 7.
2 × 2 × 2 × 2 × 2 is equal to
(a) 2⁴
(b) 2³
(c) 2²
(d) 2⁵

Answer

Answer: (d) 2⁵
Hint:
Formula

MCQ Questions For Class 8 Maths Exponents And Powers Question 8.
In 10², the exponent is
(a) 1
(b) 2
(c) 10
(d) 1.

Answer

Answer: (b) 2
Hint:
Definition of exponent

Class 8 Maths Exponents And Powers MCQ Question 9.
In 10² the base is
(a) 1
(b) 0
(c) 10
(d) 100.

Answer

Answer: (c) 10
Hint:
Definition of base

MCQ Exponents And Powers Class 8 Question 10.
10^-1 is equal to
(a) 10
(b) -1
(c) \(\frac{1}{10}\)
(d) –\(\frac{1}{10}\)

Answer

Answer: (c) \(\frac{1}{10}\)
Hint:
10^-1 = \(\frac{1}{10^1}\) = \(\frac{1}{10}\)

MCQs On Exponents And Powers Class 8 Question 11.
The multiplicative inverse of 2-3 is
(a) 2
(b) 3
(c) 3
(d) 23

Answer

Answer: (d) 23
Hint:
2^-3. 2³ = 2^-3+3 = 2⁰ = 1

Class 8 Maths Ch 12 MCQ Question 12.
The multiplicative inverse of 10⁵ is
(a) 5
(b) 10
(c) 10^-5
(d) 10⁵.

Answer

Answer: (c) 10^-5
Hint:
10⁵. 10^-5 = 2^5-5 = 10⁰ = 1

Exponents And Powers Class 8 MCQ Pdf Question 13.
The multiplicative inverse of \(\frac{1}{2^2}\) is 22
(a) 2⁵
(b) 2²
(c) 2
(d) 1.

Answer

Answer: (b) 2²
Hint:
\(\frac{1}{2^2}\) = 2² = 1

MCQ Questions For Class 8 Maths Chapter 12 Question 14.
The multiplicative inverse of 10¹⁰ is
(a) 10
(b) \(\frac{1}{10}\)
(c) 10^-10
(d) 10¹⁰.

Answer

Answer: (d) 10¹⁰
Hint:
10^-10.10¹⁰ = 10^-10+10 = 10⁰ = 1

Exponents And Powers Class 8 MCQ With Answers Question 15.
The multiplicative inverse of am is
(a) a
(b) m
(c) a^m
(d) a^-m

Answer

Answer: (d) a^-m
Hint:
Definition of multiplicative inverse

MCQ Questions On Exponents For Class 8 With Answers Question 16.
5³ × 5^-1 is equal to
(a) 5
(b) 5³
(c) 5^-1
(d) 5²

Answer

Answer: (d) 5²
Hint:
5³ × 5^-1 = 5^3-1 = 5²

Class 8 Maths Chapter Exponents And Powers MCQ Question 17.
(- 2)^-5 x (-2)⁶ is equal to
(a) 2
(b) -2
(c) -5
(d) 6.

Answer

Answer: (b) -2
Hint:
(-2)^-5 × (-2)⁶ = (-2)^-5+6 = (-2)¹ = -2

Exponents And Powers Class 8 Extra Questions MCQ Question 18.
3² × 3^-4 × 3⁵ is equal to
(a) 3
(b) 3²
(c) 3³
(d) 3⁵

Answer

Answer: (c) 3³
Hint:
3² × 3^-4 × 3⁵ = 3^2-4+5 = 3³

MCQ For Exponents And Powers Class 8 Question 19.
(-2)^-2 is equal to
(a) \(\frac{1}{4}\)
(b) \(\frac{1}{2}\)
(c) –\(\frac{1}{2}\)
(d) –\(\frac{1}{4}\)

Answer

Answer: (a) \(\frac{1}{4}\)
Hint:
(-2)^-2 = \(\frac{1}{(-2)^2}\) = \(\frac{1}{4}\)

Exponents And Powers Class 8 MCQ Questions Question 20.
(\(\frac{1}{2}\))^-4 is equal to
(a) 2
(b) 2^-4
(c) 1
(d) 2^-4

Answer

Answer: (b) 2^-4
Hint:
(\(\frac{1}{2}\))^-4 = \(\frac{(1)^{-4}}{(2)^{-4}}\) = \(\frac{1}{(2)^{-4}}\) = 2⁴

Exponents And Radicals Class 8 MCQ Question 21.
(2° + 4^-1) × 2² is equal to
(a) 2
(b) 3
(c) 4
(d) 5

Answer

Answer: (d) 5
Hint:
(2⁰ + 4^-1) × 2² = (1 + \(\frac{1}{4}\)) × 4 = \(\frac{5}{4}\) × 4 = 5

Question 22.
(2^-1 + 3^-1 + 5^-1)⁰ is equal to
(a) 2
(b) 3
(c) 5
(d) 1.

Answer

Answer: (d) 1
Hint:
(2^-1 + 3^-1 + 5^-1)⁰ = 1 [∵ a⁰ = 1]

Question 23.
3^m + 3^-3 = 3⁵ ⇒ m is equal to
(a) 1
(b) 2
(c) 3
(d) 4.

Answer

Answer: (b) 2
Hint:
3^m + 3^-3= 3⁵ ⇒ 3^m+3 = 3⁵
⇒ m + 3 = 5 ⇒ m = 2

Question 24.
(-2)^m+1 × (-2)⁴ = (-2)⁶ ⇒ m =
(a) 0
(b) 1
(c) -1
(d) none of these.

Answer

Answer: (b) 1
Hint:
(-2)^m+1 × (-2)⁴ = (-2)⁶
⇒ (-2)^m+1+4 = (-2)⁶
⇒ m + 5 = 6 ⇒ m = 1

Question 25.
(-1)⁵⁰ is equal to
(a) -1
(b) 1
(c) 50
(d) – 50.

Answer

Answer: (b) 1
Hint:
(-1) ^{even natural number} = 1

Question 26.
(-1)⁵¹ is equal to
(a) -1
(b) 1
(c) 51
(d) -51.

Answer

Answer: (a) -1
Hint:
(-1) ^{odd natural number} = -1

Question 27.
149600000000 is equal to
(a) 1.496 × 10¹¹
(b) 1.496 × 10¹⁰
(c) 1.496 × 10¹²
(d) 1.496 × 10⁸.

Answer

Answer: (a) 1.496 × 10¹¹
Hint:
149,600,000,000 = 1.496 × 10¹¹

Question 28.
300000000 is equal to
(a) 3 × 10⁸
(b) 3 × 10⁷
(c) 3 × 10⁶
(d) 3 × 10⁹

Answer

Answer: (a) 3 × 10⁸
Hint:
300,000,000 = 3 × 10⁸

Question 29.
0.000007 is equal to
(a) 7 × 10^-6
(b) 7 × 10^-5
(c) 7 × 10^-4
(d) 7 × 10^-3

Answer

Answer: (a) 7 × 10^-6
Hint:
0.000007 = 7 × 10^-6

Question 30.
384467000 is equal to
(a) 3.84467 × 10⁸
(b) 3.84467 × 10³
(c) 3.84467 × 10⁷
(d) 3.84467 × 10⁶

Answer

Answer: (a) 3.84467 × 10⁸
Hint:
384467000 = 3.84467 × 10⁸

Question 31.
0.00001275 is equal to
(a) 1.275 × 10^-5
(b) 1.275 × 10^-3
(c) 1.275 × 10⁴
(d) 1.275 × 10³

Answer

Answer: (a) 1.275 × 10^-5
Hint:
0.00001275 = 1.275 × 10^-5

Question 32.
695000 is equal to
(a) 6.95 × 10⁵
(b) 6.95 × 10³
(c) 6.95 × 10⁶
(d) 6.95 × 10⁴

Answer

Answer: (a) 6.95 × 10⁵
Hint:
695000 = 6.95 × 10⁵

Question 33.
503600 is equal to
(a) 5.036 × 10⁵
(b) 5.036 × 10⁶
(c) 5.036 × 10⁴
(d) 5.036 × 10⁷

Answer

Answer: (a) 5.036 × 10⁵
Hint:
503600 = 5.036 × 10⁵

Question 34.
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: (a) 1.6 × 10^-3
Hint:
0.0016 = 1.6 × 10^-3

Question 35.
0.000003 is equal to
(a) 3 × 10^-6
(b) 3 × 10⁶
(c) 3 × 10⁵
(d) 3 × 10^-5

Answer

Answer: (a) 3 × 10^-6
Hint:
0.000003 = 3 × 10^-6

Question 36.
8848 is equal to
(a) 8.848 × 10³
(b) 8.848 × 10²
(c) 8.848 × 10
(d) 8.848 × 10⁴

Answer

Answer: (a) 8.848 × 10³
Hint:
8848 = 8.848 × 10³

Question 37.
1.5 × 10¹¹ is equal to
(a) 150000000000
(b) 15000000000
(c) 1500000000
(d)1500000000000.

Answer

Answer: (a) 150000000000
Hint:
1.5 × 10¹¹ = 150,000,000,000

Question 38.
2.1 × 10^-6 is equal to
(a) 0.0000021
(b) 0.000021
(c) 0.00021
(d) 0.0021.

Answer

Answer: (a) 0.0000021
Hint:
2.1 × 10^-6 = 0.0000021

Question 39.
2.5 × 10⁴ is equal to
(a) 25
(b) 250
(c) 2500
(d) 25000.

Answer

Answer: (d) 25000
Hint:
2.5 × 10⁴ = 25000

Question 40.
0.07 × 10¹⁰ is equal to
(a) 700000000
(b) 7000000
(c) 7000
(d) 7.

Answer

Answer: (a) 700000000
Hint:
0.07 × 10¹⁰ = 700,000,000.

Question 41.
The value of 2^-2 is:
(a) 4
(b) ¼
(c) 2
(d) ½

Answer

Answer: (b) ¼
Hint:
2^-2 = 1/2² = ¼

Question 42.
The multiplicative inverse of 7^-2is:
(a) 7²
(b) 7
(c) 1/7²
(d) 1/7

Answer

Answer: (a) 7²
Hint:
The multiplicative inverse of any value is the one which when multiplied by the original value gives a value equal to 1.
7^-2 = 1/7²
Hence, 7² x 1/7² = 1

Question 43.
2² x 2³ x 2⁴ is equal to:
(a) 2²⁴
(b) 2^-5
(c) 2⁹
(d) 2^-9

Answer

Answer: (c) 2⁹
Hint:
By laws of exponents:
a^m x aⁿ = a^m+n
2² x 2³ x 2⁴ = 2²⁺³⁺⁴ = 2⁹

Question 44.
3^-2 x 3^-5 is equal to:
(a) 3^-7
(b) 3^-3
(c) 3^-10
(d) 3⁷

Answer

Answer: (a) 3^-7
Hint:
3^-2 x 3^-5= (1/3²) x (1/3⁵)
= (1/3²⁺⁵)
= (1/3⁷)
= 3^-7

Question 45.
5⁴/5² is equal to:
(a) 5⁶
(b) 5^-6
(c) 5^-2
(d) 5²

Answer

Answer: (d) 5²
Hint:
By exponent law:
a^m/aⁿ = a^m-n
5⁴/5² = 5^4-2 = 5²

Question 46.
The value of (3⁴)³ is:
(a) 3
(b) 3¹²
(c) 3⁷
(d) None of the above

Answer

Answer: (b) 3¹²
Hint:
By law of exponent:
(a^m)ⁿ = a^mn
(3⁴)³ = 3^4×3 = 3¹²

Question 47.
3² x 4² is equal to:
(a) 121
(b) 49
(c) 144
(d) 156

Answer

Answer: (c) 144
Hint:
By exponent law;
a^m x b^m = (ab)^m
3² x 4² = (3×4)² = 12² = 144

Question 48.
5⁷/6⁷ will give the value:
(a) (5/6)⁷
(b) (5/6)⁰
(c) (5/6)^-7
(d) (6/5)^-7

Answer

Answer: (a) (5/6)⁷
Hint:
By exponent law:
a^m/b^m = (a/b)^m
5⁷/6⁷ = (⅚)⁷

Question 49.
100⁰+20⁰+5⁰ is equal to
(a) 125
(b) 25
(c) 1/125
(d) 3

Answer

Answer: (d) 3
Hint:
By exponent law we know:
a⁰ = 1
100⁰ + 20⁰ + 5⁰ = 1 + 1 + 1 = 3

Question 50.
If (–3)^m+1 × (-3)⁵ = (-3)⁷, then the value of m is:
(a) 5
(b) 7
(c) 1
(d) 3

Answer

Answer: (c) 1
Explanation: (-3)^m+1 × (-3)⁵ = (-3)⁷
(-3)^m+1+5 = (-3)⁷
(-3)^m+6 = (-3)⁷
Since, base are equal on both the sides, hence if we compare the powers,
m + 6 = 7
m = 7 – 6 = 1

We hope the given NCERT MCQ Questions for Class 8 Maths Chapter 12 Exponents and Powers with Answers Pdf free download will help you. If you have any queries regarding Exponents and Powers CBSE Class 8 Maths MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.

Online Education MCQ Questions for Class 9 Maths Chapter 13 Surface Areas and Volumes with Answers

April 11, 2022

Check the below Online Education NCERT MCQ Questions for Class 9 Maths Chapter 13 Surface Areas and Volumes with Answers Pdf free download. MCQ Questions for Class 9 Maths with Answers were prepared based on the latest exam pattern. We have provided Surface Areas and Volumes Class 10 Maths MCQs Questions with Answers to help students understand the concept very well. https://ncertmcq.com/mcq-questions-for-class-9-maths-with-answers/

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Online Education for Surface Areas and Volumes Class 9 MCQs Questions with Answers

Surface Area And Volume Class 9 MCQ Chapter 13 Question 1.
If the perimeter of one of the faces of a cube is 40 cm, then its volume is:
(a) 6000 cm³
(b) 1600 cm³
(c) 1000 cm³
(d) 600 cm³

Answer

Answer: (c) 1000 cm³

Surface Area And Volume Class 9 MCQ With Answers Chapter 13 Question 2.
A cuboid having surface areas of 3 adjacent faces as a, b and c has the volume:
(a) 3\(\sqrt{abc}\)
(b) \(\sqrt{abc}\)
(c) abc
(d) (abc)²

Answer

Answer: (b) \(\sqrt{abc}\)

Class 9 Maths Chapter 13 MCQ Question 3.
The radius of a cylinder is doubled and the height remains the same. The ratio between the volumes of the new cylinder and the original cylinder is
(a) 1 : 2
(b) 3 : 1
(c) 4 : 1
(d) 1 : 8

Answer

Answer: (c) 4 : 1

MCQ Questions For Class 9 Maths Ncert Chapter 13 Question 4.
Length of diagonals of a cube of side a cm is
(a) √2a cm
(b) √3a cm
(c) \(\sqrt{3a}\) cm
(d) 1 cm

Answer

Answer: (b) √3a cm

Ch 13 Maths Class 9 MCQ Question 5.
Volume of spherical shell is
(a) \(\frac{2}{3}\) πr³
(b) \(\frac{3}{4}\) πr³
(c) \(\frac{4}{3}\) π(R³ – r³)
(d) None of these

Answer

Answer: (c) \(\frac{4}{3}\) π(R³ – r³)

Class 9 Surface Area And Volume MCQ Chapter 13 Question 6.
Volume of hollow cylinder
(a) π(R² – r²)h
(b) πR²h
(c) πr²h
(d) πr²(h₁ – h₁)

Answer

Answer: (a) π(R² – r²)h

Class 9 Maths Ch 13 MCQ Question 7.
The radius of a sphere is 2r, then its volume will be
(a) \(\frac{4}{3}\) πr³
(b) 4πr³
(c) \(\frac{8}{3}\) πr³
(d) \(\frac{32}{3}\) πr³

Answer

Answer: (d) \(\frac{32}{3}\) πr³

MCQ On Surface Area And Volume Class 9 Pdf Chapter 13 Question 8.
In a cylinder, radius is doubled and height is halved, curved surface area will be
(a) halved
(b) doubled
(c) same
(d) four time

Answer

Answer: (c) same

MCQ Questions For Class 9 Maths Chapter 13 Question 9.
The total surface area of a cone whose radius is \(\frac{r}{2}\) and slant height 2l is
(a) 2πr(l + r)
(b) πr(l + \(\frac{r}{4}\))
(c) πr(l + r)
(d) 2πrl

Answer

Answer: (b) πr(l + \(\frac{r}{4}\))

Surface Area And Volume MCQ Class 9 Chapter 13 Question 10.
The radius of a hemispherical balloon increases from 6 cm to 12 cm as air is being pumped into it. The ratios of the surface areas of the balloon in the two cases is
(a) 1 : 4
(b) 1 : 3
(c) 2 : 3
(d) 2 : 1

Answer

Answer: (a) 1 : 4

Chapter 13 Maths Class 9 MCQ Question 11.
The length of the longest pole that can be put in a room of dimension (10 m × 10 m × 5 m) is
(a) 15 m
(b) 16 m
(c) 10 m
(d) 12 m

Answer

Answer: (a) 15 m

MCQ Questions For Class 9 Maths Surface Area And Volume Chapter 13 Question 12.
The lateral surface area of a cube is 256 m³. The volume of the cube is
(a) 512 m³
(b) 64 m³
(c) 216 m³
(d) 256 m³

Answer

Answer: (a) 512 m³

MCQ Of Surface Area And Volume Class 9 Chapter 13 Question 13.
The radii of two cylinders are in the ratio of 2 : 3 and their heights are in the ratio of 5 : 3. The ratio of their volumes is
(a) 10 : 17
(b) 20 : 27
(c) 17 : 27
(d) 20 : 37

Answer

Answer: (b) 20 : 27

Class 9 Maths Chapter 13 MCQ With Answers Question 14.
A cone is 8.4 cm high and the radius of its base is 2.1 cm. It is melted and recast into a shape. The radius of the sphere is
(a) 4.2 cm
(b) 2.1 cm
(c) 2.4 cm
(d) 1.6 cm

Answer

Answer: (b) 2.1 cm

MCQ On Surface Area And Volume Class 9 Chapter 13 Question 15.
The total surface area of a cube is 96 cm². The volume of the cube is
(a) 8 cm³
(b) 512 cm³
(c) 64 cm³
(d) 27 cm³

Answer

Answer: (c) 64 cm³

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Online Education MCQ Questions for Class 9 Maths Chapter 11 Constructions with Answers

April 11, 2022

Check the below Online Education NCERT MCQ Questions for Class 9 Maths Chapter 11 Constructions with Answers Pdf free download. MCQ Questions for Class 9 Maths with Answers were prepared based on the latest exam pattern. We have provided Constructions Class 10 Maths MCQs Questions with Answers to help students understand the concept very well. https://ncertmcq.com/mcq-questions-for-class-9-maths-with-answers/

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Online Education for Constructions Class 9 MCQs Questions with Answers

Construction Class 9 MCQ Chapter 11 Question 1.
If a, b and c are the lengths of the three sides of a triangle, then which of the following is true?
(a) a + b < c
(b) a – b < c
(c) a + b = c

Answer

Answer: (b) a – b < c

Construction MCQ Class 9 Chapter 11 Question 2.
With the help of a ruler and compasses, which of the following is not possible to construct?
(a) 70°
(b) 60°
(c) 135°

Answer

Answer: (a) 70°

Class 9 Construction MCQ Chapter 11 Question 3.
Which of the following sets of angles can be the angles of a triangle?
(a) 30°, 60°, 80°
(b) 40°, 60°, 70°
(c) 50°, 30°, 100°

Answer

Answer: (c) 50°, 30°, 100°

Class 9 Maths Chapter 11 MCQ Question 4.
The construction of the triangle ABC is possible if it is given that BC = 4 cm, ∠C = 60° and the difference of AB and AC is
(a) 3.5 cm
(b) 4.5 cm
(c) 3 cm
(d) 2.5 cm

Answer

Answer: (b) 4.5 cm

Class 9 Maths Ch 11 MCQ Question 5.
Which of the following can be the length of BC required to construct the triangle ABC such that AC = 7.4 cm and AB = 5 cm?
(a) 3.5 cm
(b) 2.1 cm
(c) 4.7 cm

Answer

Answer: (b) 2.1 cm

Constructions Class 9 MCQ Chapter 11 Question 6.
If we want to construct a triangle, given its perimeter, then we need to know:
(a) Sum of two sides of triangle
(b) Difference between two sides of triangle
(c) One base angles
(d) Two base angles

Answer

Answer: (c) One base angles

MCQ On Constructions Class 9 Chapter 11 Question 7.
To construct a bisector of a given angle, we need:
(a) A ruler
(b) A compass
(c) A protractor
(d) Both ruler and compass

Answer

Answer: (d) Both ruler and compass

Class 9 Maths Chapter 11 MCQ With Answers Question 8.
Which of the following set of lengths can be the sides of a triangle?
(a) 2 cm, 4 cm, 1.9 cm
(b) 1.6 cm, 3.7 cm, 5.3 cm
(c) 5.5 cm, 6.5 cm, 8.9 cm
(d) None of the above

Answer

Answer: (c) 5.5 cm, 6.5 cm, 8.9 cm

MCQ Of Construction Class 9 Chapter 11 Question 9.
Which of these angles cannot be constructed using ruler and compasses?
(a) 120
(b) 60
(c) 140
(d) 135

Answer

Answer: (c) 140

MCQ Questions For Class 9 Maths Ncert Chapter 11 Question 10.
Which of the following angles can be constructed using ruler and compasses?
(a) 35
(b) 45
(c) 95
(d) 55

Answer

Answer: (b) 45
Hint:
See the figure below:
MCQ Questions For Class 9 Maths Ncert Chapter 11
ROA = 45°

Construction Class 9 MCQ With Answers Chapter 11 Question 11.
With the help of a ruler and compasses which of the following is not possible to construct?
(a) 120°
(b) 135°
(c) 140°

Answer

Answer: (c) 140°

Class 9 Chapter 11 MCQ Question 12.
If the construction of a triangle ABC in which AB = 6 cm, ∠A = 70° and ∠B = 40° is possible then find the measure of ∠c.
(a) 40°
(b) 70°
(c) 80°

Answer

Answer: (b) 70°

MCQ Questions For Class 9 Maths Chapter 11 Question 13.
Which of the following set of lengths can be the sides of a triangle?
(a) 2 cm, 4 cm, 1.9 cm
(b) 5.5 cm, 6.5 cm, 8.9 cm
(c) 1.6 cm, 3.7 cm. 5.3 cm

Answer

Answer: (b) 5.5 cm, 6.5 cm, 8.9 cm

Question 14.
The construction of a triangle ΔABC in which BC = 6 cm, ∠A = 50° is not possible, when difference of BC and AC is equal to
(a) 4.6 cm
(b) 6.4 cm
(c) 5.1 cm

Answer

Answer: (b) 6.4 cm

Question 15.
Which of the following angle can be constructed with the help of a ruler and a pair of compasses?
(a) 35°
(b) 40°
(c) 37.5°
(d) 47.5°

Answer

Answer: (c) 37.5°

Question 16.
To construct an angle of 60 degrees, we need to draw first:
(a) A ray
(b) An arc
(c) Two rays
(d) A straight line

Answer

Answer: (a) A ray
Hint:
To construct an angle of 60 degrees we need to start at the initial point of a ray.

Question 17.
The side lengths 4 cm, 4 cm and 4 cm can be sides of:
(a) Scalene Triangle
(b) Isosceles Triangle
(c) Equilateral Triangle
(d) None of the above

Answer

Answer: (c) Equilateral Triangle
Hint:
Equilateral triangle has all its three sides equal.

Question 18.
If a, b and c are the lengths of three sides of a triangle, then:
(a) a + b > c
(b) a – b > c
(c) a + b = c
(d) a – b = c

Answer

Answer: (a) a + b > c
Hint:
The sum of two sides of a triangle is always greater than the third side.

Question 19.
Which of these angles we cannot construct it using ruler and compasses?
(a) 120
(b) 70
(c) 60
(d) All can be constructed

Answer

Answer: (b) 70

Question 20
Which of the following angles can be constructed using ruler and compass?
(a) 35
(b) 40
(c) 90
(d) 50

Answer

Answer: (c) 90
Hint:
See the figure below:
MCQ Questions for Class 9 Maths Chapter 11 Constructions with Answers
∠POA = 90

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MCQ Questions for Class 10 Social Science with Answers

April 11, 2022

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MCQ Questions for Class 10 Hindi with Answers Kshitij, Kritika, Sparsh, Sanchayan Bhag 2

April 8, 2022

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MCQ Questions for Class 10 English with Answers First Flight, Footprints Without Feet

April 8, 2022

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MCQ Questions for Class 8 Science Chapter 15 Some Natural Phenomena with Answers

March 10, 2022

Check the below Online Education NCERT MCQ Questions for Class 8 Science Chapter 15 Some Natural Phenomena with Answers Pdf free download. MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern. We have provided Some Natural Phenomena Class 8 Science MCQs Questions with Answers to help students understand the concept very well. https://ncertmcq.com/mcq-questions-for-class-8-science-with-answers/

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Some Natural Phenomena Class 8 MCQs Questions with Answers

Choose the correct option in the following questions:

Some Natural Phenomena Class 8 MCQ Question 1.
The process of transfer of charges from a charged object to the earth is called
(a) earthing
(b) lightning
(c) oscillation motion
(d) electron movement

Answer

Answer: (a) earthing

Class 8 Science Chapter 15 MCQ Question 2.
The power of an earthquake is expressed on a scale called
(a) seismic scale
(b) iron scale
(c) richter scale
(d) large scale

Answer

Answer: (c) richter scale

Natural Phenomena Class 8 MCQ Question 3.
Which instrument is used to measure earthquake?
(a) Richter scale
(b) Seismograph
(c) Polygraph
(d) None of these

Answer

Answer: (b) Seismograph

Class 8 Some Natural Phenomena MCQ Question 4.
Which is not a natural phenomena?
(a) Earthquakes
(b) Cyclones
(c) Lightning
(d) Earthing

Answer

Answer: (d) Earthing

MCQ On Some Natural Phenomena Class 8 Question 5.
How many types of charges are gained by rubbing objects?
(a) 2
(b) 1
(c) 3
(d) 4

Answer

Answer: (a) 2

Class 8 Science Ch 15 MCQ Question 6.
Where is the lightning rod attached to protect the building from lightning?
(a) On the top of the building
(b) On the bottom of the building
(c) In the middle of the building
(d) All of these

Answer

Answer: (a) On the top of the building

MCQ Questions For Class 8 Science Chapter 15 Question 7.
Lightning always follows
(a) a thunder
(b) rain pour
(c) the easiest path
(d) a straight path

Answer

Answer: (a) a thunder

Some Natural Phenomena Class 8 MCQ With Answers Question 8.
Tsunami means
(a) earthquake
(b) floods
(c) earthquake under the sea
(d) eruption of volcano in a sea

Answer

Answer: (c) earthquake under the sea

MCQ On Earthquake Class 8 Question 9.
The waves produced on the earth’s surface is called
(a) seismic wave
(b) longitudinal wave
(c) Micro wave
(d) Radio wave

Answer

Answer: (a) seismic wave

MCQ Questions On Some Natural Phenomena Class 8 Question 10.
Amber is a
(a) metal
(b) rubber
(c) resin
(d) sugar

Answer

Answer: (c) resin

MCQ Some Natural Phenomena Class 8 Question 11.
Which is the surest test of charge on a body?
(a) Repulsion
(b) Lightning
(c) Combustion
(d) Insulation

Answer

Answer: (a) Repulsion

Ch 15 Science Class 8 MCQ Question 12.
Which of the following can be charged with static electricity ?
(a) Metal
(b) Alloy
(c) Insulator
(d) Semiconductor

Answer

Answer: (c) Insulator

Class 8 Science Some Natural Phenomena MCQ Question 13.
Which of the following occurs during lightning?
(a) Acid rain
(b) Nitrogen fixation
(c) Green house effect
(d) Earthing

Answer

Answer: (b) Nitrogen fixation

Question 14.
Which of the following can be charged by rubbing?
(a) Ebonite
(b) Plastic
(c) Amber
(d) All of these

Answer

Answer: (d) All of these

Question 15.
When two bodies are rubbed against each other, they acquire
(a) equal and like charges
(b) equal and unlike charges
(c) unequal and like charges
(d) unequal and unlike charges

Answer

Answer: (b) equal and unlike charges

Question 16.
It is a convention to call the charge acquired by a glass rod when it is rubbed with silk as __________
(a) Negative
(b) Positive
(c) Neutral
(d) Can be any one

Answer

Answer: (b) Positive

Question 17.
A device used to test whether an object is carrying charge or not is called ______.
(a) Electrometer
(b) Charge meter
(c) Electroscope
(d) Chargoscope

Answer

Answer: (c) Electroscope

Question 18.
During lightning actually _____________ takes place
(a) Electric discharge
(b) Electric charging
(c) Electric charge accumulation
(d) All of the above

Answer

Answer: (a) Electric discharge

Question 19.
During a thunderstorm which action may be done?
(a) Using Telephone having cord
(b) Switching on / off electric lights
(c) Using a mobile phone
(d) None of the above

Answer

Answer: (c) Using a mobile phone

Question 20.
To protect tall buildings from the damage of lightning, what can be done?
(a) Not to build tall buildings
(b) Install lightning conductors
(c) Install many TV antennas
(d) Have a roof top garden with tall trees

Answer

Answer: (b) Install lightning conductors

Question 21.
A major earthquake occurred on 26th January 2001 in which part of India?
(a) Uri (Kashmir)
(b) Mumbai (Maharastra)
(c) Guwahati (Assam)
(d) Bhuj (Gujarat)

Answer

Answer: (d) Bhuj (Gujarat)

Question 22.
During thunderstorm it is safer to
(a) Carry an open umbrella
(b) Take shelter under short trees
(c) Take shelter under tall trees
(d) Stand in open fields

Answer

Answer: (b) Take shelter under short trees

Question 23.
The process of transferring charge from a charged body to earth is called
(a) transferring
(b) Processing
(c) Charging
(d) Earthing

Answer

Answer: (d) Earthing

Question 24.
Seismograph is an instrument used to
(a) Record strength of wind
(b) Record vibrations of earthquake
(c) Record lightening
(d) Record temperature

Answer

Answer: (b) Record vibrations of earthquake

Question 25.
The power of an earthquake is expressed in terms of magnitude on a scale called
(a) Righter Scale
(b) Quake scale
(c) Richter Scale
(d) Earth Scale

Answer

Answer: (c) Richter Scale

Match the following items given in Column ‘A’ with that in Column ‘B’:

Column A	Column B
(i) Richter scale	(a) Sudden shaking of the earth
(ii) Waves recorder	(b) Conductor
(iii) Earthquake	(c) Earthing
(iv) Copper	(d) Earthquake under sea
(v) Transfer of charge to the earth	(e) Lightning
(vi) Tsunami	(f) Seismograph
(vii) Nitrogen fixation	(g) Power of earthquake
(viii) Insulator	(h) Plastic

Answer

Answer:

Column A	Column B
(i) Richter scale	(g) Power of earthquake
(ii) Waves recorder	(f) Seismograph
(iii) Earthquake	(a) Sudden shaking of the earth
(iv) Copper	(b) Conductor
(v) Transfer of charge to the earth	(c) Earthing
(vi) Tsunami	(d) Earthquake under sea
(vii) Nitrogen fixation	(e) Lightning
(viii) Insulator	(h) Plastic

Fill in the blanks with the appropriate words:

1. The electrical charge generated by rubbing two objects is ………….

Answer

Answer: static electricity

2. …………. is the sudden shaking of the Earth.

Answer

Answer: Earthquake

3. Seismograph is the instrument that records ………….

Answer

Answer: seismic waves

4. Richter scale is used to express the …………. of an earthquake.

Answer

Answer: magnitude

5. Earthquakes are caused due to the movement of ………….

Answer

Answer: Earth’s plates

6. Lightning always follows ………….

Answer

Answer: thunder

7. …………. types of charges are gained by rubbing objects.

Answer

Answer: Two

8. Nitrogen fixation occurs during ………….

Answer

Answer: lightning

State whether the statements given below are True or False:

1. An earthquake is a sudden shaking of the earth.

Answer

Answer: True

2. The process of transfer of charges from a charged object to the earth is called lightning.

Answer

Answer: False

3. The tremors produce waves on the surface of the earth.

Answer

Answer: True

4. The waves are recorded by Richter scale.

Answer

Answer: False

5. Lightning rod is a device used to secure tall buildings from the effect of lightning.

Answer

Answer: True

6. During earthquake take shelter under a table.

Answer

Answer: True

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MCQ Questions for Class 7 Maths with Answers PDF Download Chapter Wise

February 17, 2022

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We hope the given NCERT MCQ Questions for Class 7 Maths with Answers PDF Free Download will help you. If you have any queries regarding CBSE Class 7 Maths MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.

MCQ Questions for Class 10 Hindi Sanchayan with Answers

January 31, 2022

Get Chapter Wise MCQ Questions for Class 10 Hindi Sanchayan with Answers Bhag 2 PDF Free Download prepared here according to the latest CBSE syllabus and NCERT curriculum https://ncert.nic.in/. Students can practice CBSE Class 10 Hindi संचयन MCQs Multiple Choice Questions with Answers to score good marks in the examination.

Class 10 Hindi Sanchayan MCQs Multiple Choice Questions with Answers

Practicing these NCERT Hindi Sanchayan MCQs for Class 10 CBSE with Answers will guide students to do a quick revision for all the concepts present in each chapter and prepare for final exams.

MCQ Questions for Class 10 Hindi Sanchayan with Answers

We hope the given NCERT MCQ Questions for Class 10 Hindi Sanchayan with Answers PDF Free Download will help you. If you have any queries regarding CBSE Class 10 Hindi संचयन MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.

MCQ Questions for Class 10 Hindi Kritika with Answers

January 18, 2022

Get Chapter Wise MCQ Questions for Class 10 Hindi Kritika with Answers Bhag 2 PDF Free Download prepared here according to the latest CBSE syllabus and NCERT curriculum https://ncert.nic.in/. Students can practice CBSE Class 10 Hindi कृतिका MCQs Multiple Choice Questions with Answers to score good marks in the examination.

Class 10 Hindi Kritika MCQs Multiple Choice Questions with Answers

Practicing these NCERT Hindi Kritika MCQs for Class 10 CBSE with Answers will guide students to do a quick revision for all the concepts present in each chapter and prepare for final exams.

MCQ Questions for Class 10 Hindi Kritika with Answers

We hope the given NCERT MCQ Questions for Class 10 Hindi Kritika with Answers PDF Free Download will help you. If you have any queries regarding CBSE Class 10 Hindi कृतिका MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.

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