ANS:B - Poisson's ratio of high melting point metals is more than unity.

The wrong statement is: "Poisson's ratio of high melting point metals is more than unity." Poisson's ratio is a dimensionless quantity that relates the relative contraction or expansion of material in directions perpendicular to the direction of a stretching force. It typically ranges between -1 and 0.5 for most materials, with negative values indicating expansion in one direction when stretched in another. Poisson's ratio cannot exceed 0.5 for isotropic materials and is usually much lower for most engineering materials, including metals. Therefore, the statement suggesting that Poisson's ratio of high melting point metals is more than unity is incorrect.