9th Class Math Chapter 2 Online Quiz

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📝 Quick Quiz – Chapter 2: Logarithms

10 questions • Instant score & explanations • Test your understanding!

1. The logarithm of a number is the power to which the base must be raised to get that number. This definition was given by:

a) John Napier
b) Henry Briggs
c) Euler
d) Laplace

2. log₁₀(1000) is equal to:

a) 2
b) 3
c) 4
d) 10

3. logₐ(1) is always equal to:

a) 0
b) 1
c) a
d) Undefined

4. Which of the following is the correct law of logarithms?

a) log(ab) = log a + log b
b) log(ab) = log a × log b
c) log(a/b) = log a – log b
d) Both a and c

5. logₐ(aⁿ) = ?

a) n
b) a
c) 1
d) 0

6. The base of common logarithm is:

a) e
b) 2
c) 10
d) Any positive number ≠ 1

7. The base of natural logarithm is:

a) 10
b) 2
c) e (≈ 2.718)
d) π

8. log₁₀(0.001) = ?

a) -3
b) 3
c) -2
d) 0

9. The characteristic of log₁₀(456.78) is:

a) 2
b) 3
c) -1
d) 0

10. log₅(25) + log₅(125) = ?

a) log₅(3125)
b) 5
c) log₅(5)
d) 3