Physics
Fat can be seperated from milk in a cream seperator because of :

Cohesive Force
Centrifugal Force
Gravitational Force
Centripetal Force

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Physics
Which of the following events occurred first ?

Madame Marie Curie became the first woman Nobel Prize winner
Marconi first tranmitted a wireless signal
Max Planck unveiled the Quantum Theory
Albert Einstein propounded the General Theory of Relativity

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