Physics
The blue colour of water in the sea is due to

Reflection of blue sky by sea water
Absorption of other colours except blue by water molecules
Scattering of blue light by water molecules
Reflection of blue light by impurities in sea water

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Physics
Which of the following events occurred first ?

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

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