Related Questions

At the absolute zero temperature, the entropy of every perfectly crystalline substance becomes zero. This follows from the
A Third law of thermodynamics
B Second law of thermodynamics
C Nernst heat theorem
D Maxwell's relations
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
At absolute zero temperature, all substances have the same
A Heat capacity
B Crystalline structure
C Entropy
D None of these
At absolute zero temperature, the __________ of the gas is zero.
A Pressure
B Volume
C Mass
D None of these
Entropy change of mixing two liquid substances depends upon the
A Molar concentration
B Quantity (i.e. number of moles)
C Both A and B
D Neither A nor B
Those substances which have so far not been resolved by any means into other substances of simpler form are called
A Atoms
B Compounds
C Elements
D Molecules
Absolute zero, pressure will occur, when the molecular momentum of the system becomes zero. A liquid will cease to exist as liquid at
A High vacuum
B Zero pressure
C 0°K
D Earth
For a perfect gas, according to Boyle’s law (where p = Absolute pressure, v = Volume and T = Absolute temperature)
A $$\frac{{\text{v}}}{{\text{T}}}$$ = constant, if p is kept constant
B pv = constant, if T is kept constant
C $$\frac{{\text{T}}}{{\text{p}}}$$ = constant, if v is kept constant
D $$\frac{{\text{p}}}{{\text{T}}}$$ = constant, if v is kept constant
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
Which is the most stable crystalline form of silica at room temperature?
A Quartz
B Cristobalite
C Tridymite
D None of these

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