What is the basic unit of mass in the SI?
A. Gram
B. Kilogram
C. Ton
D. Pound
Answer:B
What is the basic unit of mass in the SI?
A. Gram B. Kilogram C. Ton D. Pound
Explanation: The kilogram is the basic unit of mass in the SI and is defined as the mass of the International Prototype of the Kilogram, a cylinder of platinum-iridium alloy kept at the International Bureau of Weights and Measures.