SI units and prefixes Knowledge-Based Practice

Questions

1. 1.

   Which of the following measurements is written in full compliance with the official SI rules governing unit symbols and prefixes?

   • A) $12\text{ kgs}$
   • B) $5\text{ m}\mu\text{m}$
   • C) $40\text{ Kg}$
   • D) $75\text{ nm}$
2. 2.

   Which of the following SI prefixes is correctly matched with its multiplying factor?

   • A) Mega- (M) : $10^9$
   • B) Deci- (d) : $10^{-2}$
   • C) Pico- (p) : $10^{-12}$
   • D) Nano- (n) : $10^{-6}$
3. 3.

   In the International System of Units (SI), which base unit is unique because its official name and symbol already include a metric prefix?

   • A) Meter
   • B) Second
   • C) Kilogram
   • D) Kelvin
4. 4.

   How many cubic centimeters ($\text{cm}^3$) are equivalent to a volume of exactly 1 cubic meter ($\text{m}^3$)?

   • A) $10^6$ $\text{cm}^3$
   • B) $10^3$ $\text{cm}^3$
   • C) $10^2$ $\text{cm}^3$
   • D) $10^{-6}$ $\text{cm}^3$
5. 5.

   Which of the following is classified as an SI derived unit rather than an SI base unit?

   • A) Kelvin (K)
   • B) Joule (J)
   • C) Mole (mol)
   • D) Ampere (A)
6. 6.

   Which of the following sequences correctly arranges metric prefixes in order of strictly decreasing magnitude (from largest factor to smallest factor)?

   • A) kilo-, deci-, micro-, pico-
   • B) mega-, milli-, centi-, nano-
   • C) giga-, micro-, deci-, femto-
   • D) hecto-, kilo-, nano-, micro-
7. 7.

   Which of the following metric prefixes represents a multiplication factor of $10^6$?

   • A) Kilo- ($\text{k}$)
   • B) Giga- ($\text{G}$)
   • C) Micro- ($\mu$)
   • D) Mega- ($\text{M}$)
8. 8.

   Which of the following is the coherent SI unit of density expressed strictly in terms of SI base units?

   • A) $\text{g/cm}^3$
   • B) $\text{kg/m}^3$
   • C) $\text{g/mL}$
   • D) $\text{kg/L}$
9. 9.

   How many nanometers ($\text{nm}$) are equivalent to $1\text{ millimeter (mm)}$?

   • A) $10^{6}\text{ nm}$
   • B) $10^{3}\text{ nm}$
   • C) $10^{9}\text{ nm}$
   • D) $10^{-6}\text{ nm}$
10. 10.

    Which of the following correctly pairs an SI base quantity with its official SI base unit and symbol?

    • A) Amount of substance — mole (mol)
    • B) Temperature — degree Celsius (°C)
    • C) Mass — gram (g)
    • D) Electric current — volt (V)

Answers and step-by-step solutions appear after you finish the test.