JEE Advanced Thermal Properties of Matter — practice questions
74 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice JEE Advanced Thermal Properties of Matter in the app →Per NCERT §5.1.2, an OPEN system exchanges what with its surroundings, in contrast to a closed or isolated onePer NCERT §5.1.2, an ISOLATED system is exemplified by which container?Per NCERT §5.1.4, the INTERNAL ENERGY U of a system is classified as which kind of property?Per NCERT eqn 5.1, the FIRST LAW of thermodynamics is expressed as which equation, with sign conventions?Per NCERT eqn 5.2, the pressure-volume WORK done on a gas at constant external pressure p_ex is given by whichPer NCERT §5.2.1 + eqn 5.5, for an isothermal REVERSIBLE expansion of n mol of an ideal gas from V_i to V_f, wPer NCERT §5.2.1 (free expansion), what is the work done in FREE EXPANSION of an ideal gas into vacuum (p_ex =Per NCERT §5.2.1, a process is called REVERSIBLE if it satisfies which condition?Per NCERT §5.2.1, for an ADIABATIC process (no heat exchange, q = 0), the first law reduces to which form?Per NCERT §5.2.1, for an ISOTHERMAL IRREVERSIBLE expansion of an ideal gas at constant external pressure p_ex,Per NCERT §5.2.1, at CONSTANT VOLUME (ΔV = 0), the first law simplifies to which?Per NCERT Problem 5.2, when 2 L of an ideal gas at 10 atm expands isothermally into VACUUM to total volume 10 Per NCERT §5.2.2 + eqn 5.7, the ENTHALPY H is defined as which quantity?Per NCERT eqn 5.10, the relationship between ΔH and ΔU for a gaseous reaction is which?Per NCERT Problem 5.5, for vaporisation of 1 mol of water at 100 °C and 1 bar, given ΔH = 41 kJ/mol, what is ΔPer NCERT eqn 5.13, the relationship between C_p and C_v for an ideal gas is which?Per NCERT §5.4(a), the STANDARD STATE of a substance at a specified temperature is which?Per NCERT Table 5.1, the standard enthalpies of fusion and vaporisation of WATER are which?Per NCERT §5.4(c), what is the CONVENTION for the standard enthalpy of formation Δ_f H° of an ELEMENT in its rPer NCERT Table 5.2, Δ_f H° of methane CH₄(g) is which value?Per NCERT eqn 5.15, the standard enthalpy of REACTION from formation enthalpies is computed as which?Per NCERT §5.4(e), HESS'S LAW of constant heat summation states which?Per NCERT §5.4(e) (worked example), given C+O₂→CO₂ ΔH = −393.5 and CO+½O₂→CO₂ ΔH = −283.0 kJ/mol, what is Δ_f Per NCERT §5.4(d) (thermochemical equations), if a chemical equation is REVERSED, what happens to Δ_r H°?Per NCERT §5.5(a), the STANDARD ENTHALPY OF COMBUSTION Δ_c H° of butane (cooking gas) is which?Per NCERT §5.5(a), the standard enthalpy of combustion of GLUCOSE (C₆H₁₂O₆) is which?Per NCERT §5.5(b), the ENTHALPY OF ATOMIZATION Δ_a H° of dihydrogen is which value, and how does it relate to Per NCERT §5.5(c), in CH₄ atomisation requires 1665 kJ/mol. What is the MEAN C-H bond enthalpy?Per NCERT eqn 5.17, the standard enthalpy of a GAS-phase reaction from bond enthalpies is approximated as whicPer NCERT Table 5.3(b), the bond enthalpy of N≡N triple bond is which value — among the highest known for diatPer NCERT §5.5(d), the LATTICE ENTHALPY of an ionic compound is defined as the enthalpy change for which procePer NCERT §5.5(d), the BORN-HABER cycle for NaCl uses Hess's law and includes which steps?Per NCERT §5.5(e), the enthalpy of SOLUTION Δ_sol H° of an ionic compound in water is decomposed as which sum?Per NCERT §5.3, a BOMB CALORIMETER measures which thermodynamic quantity?Per NCERT Problem 5.6, 1 g graphite burnt in a bomb calorimeter (heat capacity 20.7 kJ/K) raises temperature bPer NCERT Table 5.2, the Δ_f H° of C(diamond) is which value (note: NOT zero, because graphite — not diamond —Per NCERT §5.6, a SPONTANEOUS process is best defined as which of the following?Per NCERT §5.6(b), ENTROPY S is best described as which?Per NCERT eqn 5.18, the entropy change for a REVERSIBLE process is given by which expression?Per NCERT eqn 5.19, for a SPONTANEOUS process the TOTAL entropy change (system + surroundings) obeys which inePer NCERT Problem 5.10, in which of the following processes does entropy DECREASE?Per NCERT §5.6(e), the THIRD LAW of thermodynamics states which?Per NCERT §5.6(d), the SECOND LAW of thermodynamics, in entropy form, states which?Per NCERT eqn 5.20-21, GIBBS energy G and its change ΔG at constant T are given by which expressions?Per NCERT §5.6(c) (criteria), the sign of ΔG for a SPONTANEOUS process at constant T and p is which?Per NCERT Table 5.4, a reaction with ΔH < 0 AND ΔS > 0 is spontaneous under which condition?Per NCERT Table 5.4, a reaction with ΔH > 0 AND ΔS > 0 is spontaneous under which condition?Per NCERT §5.7 eqn 5.23, the relation between ΔG° and equilibrium constant K is which?A gas absorbs $200$ J of heat and does $80$ J of work on its surroundings. The change in internal energy is:A pump compresses gas very fast, so no heat escapes. The process is:A Carnot engine works between $T_h = 400$ K and $T_c = 300$ K. Its efficiency is:A glass of cold lassi placed on a kitchen counter eventually warms to room temperature. The second law of therFor a reaction occurring at constant pressure in an open beaker, the heat absorbed equals:Hess's law states that the standard enthalpy change for a reaction:Among solid ice, liquid water, and water vapour at the same temperature, entropy is:A reaction has $\Delta H = -100$ kJ and $\Delta S = +200$ J/K. At $T = 298$ K, $\Delta G$ is:Temperature is described as a measure of the hotness of a:Heat is energy transferred between systems by virtue of a difference in:Expansion in the length of a solid on heating is called:A device used to carry out heat measurement is called a:How many distinct modes of heat transfer are described?The heat needed per unit mass to change the state of a substance is called:The latent heat for a change between solid and liquid is called the latent heat of:Heat capacity defined per mole of a substance is known as the:Thermal current through a bar is inversely proportional to which quantity?The constant of proportionality in the conduction equation is called the:Water behaves anomalously by contracting on heating between which temperatures?The temperature at which solid and liquid states are in thermal equilibrium is the:The refreezing of ice after the pressure on it is released is called:Newton's law of cooling makes the rate of heat loss proportional to the difference between:The triple point of water is represented by which temperature?For water, the latent heat of fusion is given as which value?Which law relates the wavelength of peak emission to the temperature of a body?The law relating radiated energy to temperature, proved theoretically by Boltzmann, is named after: