Physics
What changes will happen to a bowl of ice and water kept at exactly zero degree Celsius ?

All ice will melt
All water will become ice
No change will happen
Only some ice will melt

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

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

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Physics
A Fuse wire is characterised by

Low resistance and low melting point
High resistance and high melting point
High resistance and low melting point
Low resistance and high melting point

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