Apiece of wood and a piece of steel are at the same temperature; however, the steel feels hotter. this is because the steel has
a- more entropy
b- greater thermal conductivity
c- greater thermal insulation
d- a higher r-value

The correct answer is "greater thermal conductivity".

Explanation:

Thermal conductivity: It is a ability to conduct heat. Heat transfers occur at a lower rate to material at higher thermal conductivity.

It is defined as the rate at which the heat is transferred through a unit thickness of the substance per area per change in the temperature.

In the given problem, A piece of wood and a piece of steel are at the same temperature. However, the steel feels hotter. The thermal conductivity of the steel is more than the thermal conductivity of the wood.

Therefore,  the correct option is "greater thermal conductivity".

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.