Question

Which one of the following is not a unit of British system of units?
A. Foot
B. Metre
C. Pound
D. Second

Answer 1

The imperial system of units (also known as British system) is the system of units developed through a series of Weights and Measures Acts and amendments.

Complete step by step answer:
We are given some units and we have to find which of these is not a unit of British system of units.First unit is foot. Foot is a unit for measuring length. It is one of the British units. It is based on the length of a foot. 1 foot= 12 inches or 30 centimetres.Second unit is Metre. Metre is a SI unit of length. It is used for measuring length. One metre is equal to 100 centimetres. Third unit is Pound. Pound is a unit for measuring weight which is equal to approximately 0.45 kg. It is one of the British units.Fourth unit is Second. A second is used to measure time. It is the base unit of time. It is a SI unit of time. 1 second is equal to 1/60th of a minute and 1/3600th of an hour and 1/86400th of a day.As we can see foot and pound are the British units and Metre, Second are the SI units i.e. not units of British system.
Options B and D are the answers.

Note: A unit is any measurement. There are many types of sets of systems of units. SI, FPS, MKS, CGS are some of them.