List of top Nano Technology Questions asked in Andhra Pradesh Post Graduate Engineering Common Entrance Test

Calculate the increase in entropy when two identical containers, each containing 1 mole of an ideal gas at 300 K and 1 atm, are allowed to mix freely.
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During an isothermal expansion of an ideal gas, how does the entropy of the system change?
What does the Third Law of Thermodynamics state about the entropy of a perfect crystal at absolute zero temperature?
A reaction's Gibbs free energy change (\(\Delta G\)) is found to be positive at 298 K but becomes negative at 350 K. What does this imply about the reaction?
One mole of an ideal gas expands isothermally and reversibly from 2 liters to 6 liters at a temperature of 300 K. Calculate the work done by the gas. (R=8.314 J/K/mol)
An ideal gas is compressed adiabatically, where its initial volume of 3 liters is reduced to 1 liter. If the initial pressure was 1 atm and \(\gamma=5/3\), calculate the final pressure of the gas.
A Carnot engine operates between a hot reservoir at 500 K and a cold reservoir at 300 K. Calculate the efficiency of the engine.
Calculate the heat transferred when 50 g of water is heated from 20\(^\circ\)C to 80\(^\circ\)C. The specific heat capacity of water is (4)18 J/\(^\circ\)C\(^{-1}\)g\(^{-1}\)
A 10 kg block slides down a frictionless incline from a height of 5 meters. Assuming the gravitational constant g=9.8 m/s\(^2\), calculate the kinetic energy of the block at the bottom of the incline.
What is the significance of the Gibbs-Helmholtz Equation in chemical thermodynamics?
If the enthalpy change for a process at constant pressure is negative, what type of process is it likely to be?
Identify the equation typically used to describe the efficiency of a cyclic process.
How can the concept of maximum work be used to determine the efficiency of a thermodynamic cycle?
Consider a process where the entropy change of the system is negative. What can be inferred if the process is spontaneous?
How does the Clausius-Clapeyron Equation help in meteorology?
A system undergoes isothermal reversible expansion. What is true about the work done by the system?
Cold Working is primarily characterized by
The effect of grain growth on the mechanical properties of a metal is
The main mechanism of plastic deformation in metals is
How does dislocation movement by cross-slip differ from climb?
The type of defect involves an atom from an impurity substituting for a lattice atom is
Which of the following crystal system has axes of equal length intersecting at 90-degree angles?
The primary mechanism for deformation by twinning is
The primary result of grain growth in a material is
The typical characteristic of a stress-strain diagram for cast iron