Question

1a) The system is at 25 degrees Celsius and the surroundings are at degrees Celcius. The system is a closed system.

a) thermal energy will flow from system to surrounding

b) thermal energy will flow from surrounding to system

c) there will be no net flow of thermal energy

1b) The system is at 25 degrees Celsius and the surroundings are at 0 degrees Celcius. The system is an isolated system

a) thermal energy will flow from system to surrounding

b) thermal energy will flow from surrounding to system

c) there will be no net flow of thermal energy

1c) The system is at 25 degrees Celsius and the surroundings are at 0 degrees Celcius. The walls of the system are adiabatic

a) thermal energy will flow from system to surrounding

b) thermal energy will flow from surrounding to system

c) there will be no net flow of thermal energy

1d)  The system is at 25 degrees Celsius and the surroundings are at 0 degrees Celcius. The walls of the system are diathermic

a) thermal energy will flow from system to surrounding

b) thermal energy will flow from surrounding to system

c) there will be no net flow of thermal energy

1e) The system is at 25 degrees Celsius and the surroundings are at 25 degrees Celcius. The walls of the system are diathermic.

a) thermal energy will flow from system to surrounding

b) thermal energy will flow from surrounding to system

c) there will be no net flow of thermal energy

Answer 1

Thermal Energy always flows from higher tempurature to lower tempurature

1a) given system is at 25 degrees and surrounding at 0 degrees and it is a closed system

in a closed syestem no matter only energy transfer takes place

as system tempurature is higher than surrounding thermal energy transfers from system to surrounding

so option a is correct

option b from surrounding to system is incorrect

option c no net flow of enenrgy is in correct

1b) system is at 25 and surrounding at 0 . sysytem is isolated.

in isolated system no mass and energy transfer takes place .So no net flow of energy

so option c is correct

neither energy flows from system to surrounding nor vice versa.so option a and b are incorrect

1c) system is 25 and surrounding at 0. walls of system are adiabiatic

in adiabiatic walls also no mass and energy transfer takes place .So no net flow of energy

so option c is correct

neither energy flows from system to surrounding nor vice versa.so option a and b are incorrect

1d) system is at 25 degrees and surrounding is at 0 degrees . walls of system is diathermic

in diathermic walls no matter but energy flow takes place . So thermalenergy flows from system to surrounding

  so option a is correct

option b from surrounding to system is incorrect

option c no net flow of energy is incorrect

1e) system is at 25 degrees and surrounding is also at 25 degrees. walls are diathermic

even though walls are diathermic no energy flows takes place as both are at same tempurature.

so option c is correct

neither thermal energy flows from system to surrounding nor vice versa.so option a and b are incorrect