Q1: The atomic heat capacities of all solid elements __________ with decrease in temperature.

ANS:B - decreases

The correct statement is: "The atomic heat capacities of all solid elements increases with decrease in temperature." As the temperature decreases, the atomic heat capacities of solid elements typically increase. This is because at lower temperatures, the atoms in the solid lattice have less thermal energy available to them, and therefore additional energy (in the form of heat) contributes more significantly to increasing the vibrational and rotational energies of the atoms within the lattice.