Question Paper
Class / Subject: Class 9 (ICSE) · Mathematics
Chapter: Chapter 8 — Chapter 8: Logarithms
Time Allowed: 32 minutes
Max Marks: 16
1. What is a logarithm? [1]
(A) The inverse of exponentiation
(B) The same as multiplication
(C) The same as addition
(D) Nothing related to exponents
2. If 2^3=8, what is log base 2 of 8? [1]
(A) 3
(B) 8
(C) 2
(D) 6
3. What base do common logarithms use? [1]
(A) 10
(B) e
(C) 2
(D) 100
4. What base do natural logarithms use? [1]
(A) e (≈2.718)
(B) 10
(C) 2
(D) 100
5. What is log(mn)? [1]
(A) log(m) + log(n)
(B) log(m) - log(n)
(C) log(m) × log(n)
(D) log(m) ÷ log(n)
6. What is log(m/n)? [1]
(A) log(m) - log(n)
(B) log(m) + log(n)
(C) log(m) × log(n)
(D) log(m) ÷ log(n)
7. What is log(m^n)? [1]
(A) n × log(m)
(B) log(m) + n
(C) log(m) - n
(D) m × log(n)
8. Where are logarithms used? [1]
(A) Science, engineering and finance
(B) Nowhere useful
(C) Only in maths class
(D) Only for tests
9. What is a logarithm? [1]
(A) The inverse of exponentiation
(B) The same as multiplication
(C) The same as addition
(D) Nothing related to exponents
10. If 2^3=8, what is log base 2 of 8? [1]
(A) 3
(B) 8
(C) 2
(D) 6
11. What base do common logarithms use? [1]
(A) 10
(B) e
(C) 2
(D) 100
12. What base do natural logarithms use? [1]
(A) e (≈2.718)
(B) 10
(C) 2
(D) 100
13. What is log(mn)? [1]
(A) log(m) + log(n)
(B) log(m) - log(n)
(C) log(m) × log(n)
(D) log(m) ÷ log(n)
14. What is log(m/n)? [1]
(A) log(m) - log(n)
(B) log(m) + log(n)
(C) log(m) × log(n)
(D) log(m) ÷ log(n)
15. What is log(m^n)? [1]
(A) n × log(m)
(B) log(m) + n
(C) log(m) - n
(D) m × log(n)
16. Where are logarithms used? [1]
(A) Science, engineering and finance
(B) Nowhere useful
(C) Only in maths class
(D) Only for tests