Correct Answer – D
Molality of a solution remains independent of temperature.

Correct Answer – 1
While expressing molarity, we take moles of solute per `1000 g` of solvent. Since the no. of moles and mass are independent of of temperature, the answer is (1).
Each method of expressing concentration of the solutions has its own merits and demerits. Mass%, ppm, mole fraction and molarity are independed of temperature, whereas molarity is a function of temperature. This is because volume depends on temperature and the mass does not. Similarly formally and noemally involving depend on temperature.

Correct Answer – D
Molality is defined in terms of weight, hence independent of temperature. Remaining three concentration units are defined in terms of volume of solutions, they depends on temperature.

Correct Answer – B

Correct Answer – D
Molality is independent of temperature.