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प्रश्न
Name the S.I unit of mass and define it.
लघु उत्तरीय
उत्तर
S.I. unit of mass is ‘kilogramme’.
In 1889, one kilogramme was defined as the mass of a cylindrical piece of a platinum-iridium alloy kept at the International Bureau of Weights and Measures at Sevres near Paris.
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