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

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

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Physics
Which one of the following is not a property of electromagnetic waves?

Electromagnetic waves do not require a medium to propagate.
Electromagnetic waves do not show interference and diffraction.
Electromagnetic waves are transverse waves
Oscillating electric field and magnetic field are perpendicular to each other.

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