A liquid metal is undercooled by T below Tm before it solidifies, sol – McqOptions

MCQOPTIONS

1.	A liquid metal is undercooled by T below Tm before it solidifies, solidification will be accompanied by _____
A.	A constant free energy
B.	An increase in free energy
C.	A decrease in free energy
D.	G=0
Answer» D. G=0

Discussion

No Comment Found

Related MCQs

Which of the following structure is stable at low temperature?
What happens to the internal energy of a system with constant volume and constant entropy during a spontaneous process?
The enthalpy of a phase which is stable at higher temperature is higher (less negative) than that of a phase which is stable at lower temperature.
Which rule states that the entropy of fusion is a constant ==<R (8.3 J mol<sup>-1</sup> K<sup>-1</sup>) for most metals?
A liquid metal is undercooled by T below Tm before it solidifies, solidification will be accompanied by _____
Which of the following is a spontaneous exothermic process?
Iron exist as BCC ferrite at temperature____________
At all temperatures the liquid has a higher enthalpy than solid.
Reason why in many metals, we find the phase with a relatively closely packed structure is stable at a lower temperature, whereas a relatively loosely packed structure is stable at higher temperature?