Q. Define Kilogram.

Answer:

Kilogram (kg):

It is the base unit of mass in the International System of Units (SI), having the unit symbol 'kg'.


Definition:

The mass of 1 liter of water at 4°C.

or

The mass is equal to the mass of slandered Platinum-Indium Cylinders ( 90% platinum % 10% Iridium). This cylinder is about 3.9 cm high and 3.9 cm in diameter.



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