63) The top, front, and bottom views align in this manner

Answer is:

Vertically

KPCL AE Mechanical Question Paper - 2018 with Answer Key

For more MCQ's Click Here

67) The behaviour of gases can be fully determined by

Answer is:

3 laws

68) Thermal diffusivity is

Answer is:

A physical property of the material

Explanation:

Thermal diffusivity is defined as the ratio of the thermal conductivity to the heat capacity of a material and it measures the ability of a material to conduct thermal energy relative to its ability to store thermal energy. Thermal diffusivity is a physical property of the material.