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

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

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Physics
A Fuse wire is characterised by

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

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