Absorption/evolution of heat during conversion of a substance from one allotropic form to another is termed as the heat of Vaporisation Sublimation Fusion Transition TRUE ANSWER : ? YOUR ANSWER : ?
Gibbs free energy (F) is defined as F = H + TS F = H - TS F = E - TS F = E + TS TRUE ANSWER : ? YOUR ANSWER : ?
Standard temperature and pressure (S.T.P.) is 0°C and 1 kgf/cm² 15°C and 1 kgf/cm² 15°C and 750 mm Hg 0°C and 750 mm Hg TRUE ANSWER : ? YOUR ANSWER : ?
PVγ = Constant (where, γ = Cp/Cv) is valid for a/an __________ process. Isentropic Adiabatic Isobaric Isothermal TRUE ANSWER : ? YOUR ANSWER : ?
After throttling, gas temperature Decreases Increases May increase or decrease ; depends on the nature of the gas Remains same TRUE ANSWER : ? YOUR ANSWER : ?
Pick out the correct equation relating 'F' and 'A'. F = E + A F = A + TS F = A + PV F = A - TS TRUE ANSWER : ? YOUR ANSWER : ?
The expression for entropy change, ΔS = n Cp . ln (T₂/T₁), is valid for the __________ of a substance. Heating Simultaneous pressure & temperature change Cooling Both B and C TRUE ANSWER : ? YOUR ANSWER : ?
For a constant pressure reversible process, the enthalpy change (ΔH) of the system is Cp.dT Cv.dT ∫Cv.dT ∫Cp.dT TRUE ANSWER : ? YOUR ANSWER : ?
Any substance above its critical temperature exists as Gas Saturated vapour Solid Liquid TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is not a reversible process ? Expansion of an ideal gas against constant pressure None of these Solution of NaCl in water at 50°C Atmospheric pressure vaporisation of water at 100°C TRUE ANSWER : ? YOUR ANSWER : ?