Which of the following is exactly equal to one liter?

• A. 100 mL
• B. 1000 cm^3
• C. 0.1 dm^3
• D. 1 m^3

Answer: (B)

Verified step by step guidance

1. Recall the basic volume unit conversions: 1 liter (L) is defined as 1000 cubic centimeters (cm^3), which is also equivalent to 1 cubic decimeter (dm^3).
2. Convert each option to liters to compare: For example, 100 mL is 0.1 L because 1000 mL = 1 L, so 100 mL = 0.1 L.
3. Recognize that 1000 cm^3 is exactly equal to 1 L because 1 cm^3 = 1 mL, so 1000 cm^3 = 1000 mL = 1 L.
4. Understand that 0.1 dm^3 equals 0.1 L since 1 dm^3 = 1 L, so 0.1 dm^3 is only one-tenth of a liter.
5. Note that 1 m^3 is much larger than 1 L because 1 m^3 = 1000 L, so it is not equal to 1 L.