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This mock test of Test: Exponents And Powers- 2 for Class 8 helps you for every Class 8 entrance exam.
This contains 40 Multiple Choice Questions for Class 8 Test: Exponents And Powers- 2 (mcq) to study with solutions a complete question bank.
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QUESTION: 1

The value of 2^{5} is _________.

Solution:
The value of 2 raised to power 5 is 32 because 2x2x2x2x2=32 therefore,32 is correct answer.

QUESTION: 2

The Base in the expression 10^{24} is __________.

Solution:
Answer is b not d. Base is 10 and exponent or power is 24.

QUESTION: 3

The value of 3^{0} is ________.

Solution:

QUESTION: 4

Multiplicative inverse of 7^{-2} is _________

Solution:

QUESTION: 5

Fill in the blank a^{m} × a^{n} = a ^{........} where m and n are natural numbers:-

Solution:

QUESTION: 6

The exponential form of 1/8 × (3)^{-3} is given by which of the following expression:

Solution:

QUESTION: 7

The value of 1/3^{-2 }is equal to

Solution:

QUESTION: 8

In exponential form 149,600,000,000 m is given by :

Solution:

QUESTION: 9

In simplified form (3^{-1} + 4^{-1} + 5^{-1})^{0} is equals to

Solution:

QUESTION: 10

The value of (2/3)^{-2} is

Solution:

QUESTION: 11

In standard form 21600000 is written as

Solution:

QUESTION: 12

Usual form of the expression 3 X 10^{-5} is given by

Solution:

Since the power is negative, we move 5 place to the left including 3.So answer is 0.00003

QUESTION: 13

1 micron is equals to

Solution:

QUESTION: 14

The approximate distance of moon from the earth is 384,467,000 m and in exponential form. This distance can be written as

Solution:

QUESTION: 15

7 × 10^{-5} m is the standard form of which of the following

Solution:

QUESTION: 16

The standard form of 4050000 is given by

Solution:

QUESTION: 17

Which one of the following is the value of 1^{15}

Solution:

QUESTION: 18

1/125 is the multiplicative inverse of

Solution:

So it’s the multiplicative inverse of 1/125

QUESTION: 19

16 is the multiplicative inverse of

Solution:

QUESTION: 20

Value of (3^{0} + 2^{0}) × 5^{0} is

Solution:

QUESTION: 21

The value of 7^{2} is

Solution:

QUESTION: 22

The Base in the expression 8^{100 }is

Solution:

QUESTION: 23

The value of 1000^{0} is

Solution:

QUESTION: 24

Multiplicative inverse of 5^{-2} is

Solution:

QUESTION: 25

Value of (2^{3})^{2} is given by ...........

Solution:

QUESTION: 26

The value of 8^{2} ÷ 2^{3} is given by........

Solution:

QUESTION: 27

The value of 1/5^{-3} is equal to ............

Solution:

QUESTION: 28

In exponential form 140,000,000,000 Kg is given by ............

Solution:

QUESTION: 29

The expression, (5^{-1} + 7^{-1} + 3^{-1})^{0} is equals to

Solution:

QUESTION: 30

The value of (1/3)^{-2} is

Solution:

QUESTION: 31

In standard form 56700000 is written as ............

Solution:

QUESTION: 32

Usual form of the expression 9 X 10^{-5} is given by

Solution:

QUESTION: 33

The number 86,800,000,000,000,000,000,000,000 Kg is equals to

Solution:

Any number written in the form m x 10^{n} is a standard form if m is between 1 and 10, so we have 23 zeros after 868 and two decimal places to make 868 less than 10. So we have 8.68 x 10^{25}K

QUESTION: 34

Charge of an electron is 0.000,000,000,000,000,000,16 coulomb and in exponential form it can be written as

Solution:

Any number written in the form m x 10^{n} is a standard form if m is between 1 and 10, so we have 18 zeros before 16 and after decimal and one decimal place after 1 to make 16 less than 10. So we have 1.6 x 10^{-19}.

QUESTION: 35

13 × 10^{-7} Km is the standard form of which of the following

Solution:

QUESTION: 36

The standard form of 9030000000 is given by

Solution:

QUESTION: 37

Which one of the following is the value of 3^{5}

Solution:

QUESTION: 38

3^{2} is the multiplicative inverse of

Solution:
3^2. Multiplicative inverse is the reciprocal, so, 1/3^-2.

1/3^-2 = 1/9{ -3*-3=9}

1/3^-2 = 1/9{ -3*-3=9}

QUESTION: 39

64 is the multiplicative inverse of

Solution:

QUESTION: 40

The value of 2^{0} × 3^{0 }× 4^{0} is

Solution:

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