The fusion of a crystalline solid at its melting point to form a liquid at the same temperature is accompanied by

A Decrease in enthalpy corresponding to evolution of heat
B Decrease of entropy
C Increase in enthalpy corresponding to absorption of heat
D No change in enthalpy

Correct Answer: Increase in enthalpy corresponding to absorption of heat

During fusion process the heat is absorbed by the solid to convert to liquid leading to increase in enthalpy.
Bissoy MCQ
#Chemical Engineering #Chemical Engineering Thermodynamics

Related Questions

While the thermosetting polymers are amorphous in nature, the thermoplastic polymers are either amorphous or crystalline. The crystalline polymers are characterised by the
A Low impact strength
B High flexibility
C Better finish and surface appearance
D High plastic deformation
The vapor pressure of a substance, at its melting point, is __________ in the solid state as compared to that in the liquid state.
A Less
B More
C Same
D Either A or B; depends on the nature of the substance
If the vapour pressure at two temperatures of a solid phase in equilibrium with its liquid phase are known, then the latent heat of fusion can be calculated by the
A Maxwell's equation
B Clayperon-Claussius equation
C Van Laar equation
D Nernst Heat Theorem
Point A is 10 miles West of Point B. Point b is 30 miles North of pint C. Point C is 20 miles East of Point D. What is the distance (in miles) between Point A and Point D?
A 1010
B 1020
C 2010
D 3010
Point A is 10 km west of point B. Point B is 30 km north of point C. Point C is 20 km east of point D. What is the distance between point A and D?
A 1020Km
B 1010Km
C 2010Km
D 3010Km
Fahim and Rishad both started at the same time from point A to point B at speeds of 52 kmph and 39 kmph respectively on the same road. As soon as Fahim reaches point B, he turns back, stats toward point A on the same road, and meets Rishad on the way. How far from point B do the two of them meet, if the distance between the points is 70 km?
A 20 km
B 30 km
C 10 km
D 25 km
Melting of wax is accompanied with __________ in entropy.
A Increase
B Decrease
C No change
D None of these
The distillation carried out in such a way that the liquid with the lowest boiling point is first evaporated and re-condensed, then the liquid with the next higher boiling point is then evaporated and re-condensed, and so on until all the available liquid fuels are separately recovered in the sequence of their boiling points. Such a process is called
A Cracking
B Fractional distillation
C Full distillation
D Carbonisation
Point A is south of point B and point B is west point C. To which direction is point A with respect to point C ?
A South
B South West
C North east
D North West
Point A is 10 miles west of Point B. Point B is 30 miles North of Point C. Point C is 20 miles East of Point D. what is the distance between points A and D?
A 1010
B 810
C 710
D 910

Next steps