Physics
Steam at 100°C causes more severe burns than water at 100°C because

Steam has no specific heat capacity
Water has no specific heat capacity
Water has latent heat of fusion
Steam has latent heat of vaporisation

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Physics
In the process of magnetisation of a bar

The entire bulk of the bar gets magnetised
Only some parts of the outer layers of the bar get magnetised
Only the ends of the bar get magnetised
Only the surface of the bar gets magnetised

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Physics
Skating on ice is possible because

The pressure on the ice due to skate melts the ice by lowering its melting point forming a thin film of water
The pressure on the ice due to skate raises its melting point
Ice is cold
The surface of ice is smooth

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