Related Questions

The absolute entropy for all crystalline substances at absolute zero temperature is
A Zero
B Negative
C More than zero
D Indeterminate
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
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
The ability of a substance to assume two or more crystalline structure is called
A Isomorphism
B Polymorphism
C Amorphism
D Isomerism
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
At absolute zero temperature, the __________ of the gas is zero.
A Pressure
B Volume
C Mass
D None of these
Entropy of a substance remains constant during a/an __________ change.
A Reversible isothermal
B Irreversible isothermal
C Reversible adiabatic
D None of these
Chemical potential (an intensive property) of a substance is a force that drives the chemical system to equilibrium and is equal to its partial molar properties. The reatio of chemical potential to free energy of a pure substance at oconstant temperature and pressure is
A 0
B 1
C ∞
D None of these
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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