Explain`:` (i) Spontaneity (ii) Free energy (iii) Reversibility (iv) Internal energy

How many of the following physical properties are extensive: (i) Free energy (ii) vapour pressure (iii) mole (iv) kinetic energy (v) Entropy (vi) Internal energy (vii) Enthalpy (viii) specific heat capacity (ix) Coefficient of viscosity

In SHM at the equilibrium position (i) displacement is minimum (ii) acceleration is zero (iii) velocity is maximum (iv) potential energy is maximum

Define the terms: (i) Free energy (ii) Thermodynamic equilibrium (iii) Entropy

Explain the following: (i) Smoke (ii) Fumes (iii) Dust (iv) Mist

Name the devices or machines which convert : (i) Electrical energy into sound energy. (ii) Heat energy into kinetic energy (or mechanical energy). (iii) Chemical energy into kinetic energy (or mechnical energy). (iv) Chemical energy into heat energy. (v) Light energy into heat energy.

A thermos flask contains coffee. It is shaken vigorously. (i) Has any heat been added to it. (ii) Has any work been done on it. (iii) Does it internal energy change? (iv) Does its temp. rise?

In the free expansion of a gas, its internal energy