Physics
When hot-water is sprinkled on a hotter glass tumbler, it breaks because

Water evaporates
Glass reacts chemically with water
Glass suddenly expands
Glass suddenly contracts

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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
Albert Einstein propounded the General Theory of Relativity
Max Planck unveiled the Quantum Theory

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