Chemistry Question Bank

Which one among the following is the correct option for right relationship between CP and CV for one mole of ideal gas? (NEET 2021)

Which of the following p-V curve represents maximum work done? (NEET 2022) (a) (b) (c) (d) Ans. (b) Sol. Option (b), represents maximum work done

A reaction having equal energies of activation for forward and reverse reactions has (NEET 2013)

Consider the following processes: ∆H (kJ/mol) 1/2A → B +150 3B → 2C + D –125 E + A → 2D +350 For B + D → E + 2C, ∆H will be (Mains 2011)

Which of the following statements is correct for the spontaneous adsorption of a gas? (2014)

Three moles of an ideal gas expanded spontaneously into vacuum. The work done will be (Mains 2010)

Which of the following is correct option for free expansion of an ideal gas under adiabatic condition? (2011)

The correct thermodynamic conditions for the spontaneous reaction at all temperatures is (NEET-I 2016)

Which one of the following is not always negative?

In a reaction P + Q → R + S, there is no change in entropy. Enthalpy change for the reaction (∆H) is 12 kJ mol–1. Under what conditions, reaction will have negative value of free energy change?

For the reaction, X2O₄(l) → 2XO₂(g) ∆U = 2.1 kcal, ∆S = 20 cal K–1 at 300 K Hence, ∆G is (2014)

When 5 litres of a gas mixture of methane and propane is perfectly combusted at 0°C and 1 atmosphere, 16 litres of oxygen at the same temperature and pressure is consumed. The amount of heat released from this combust…

The work done during the expansion of a gas from a volume of 4 dm3 to 6 dm3 against a constant external pressure of 3 atm is (1 L atm = 101.32J) (2004)

Reversible expansion of an ideal gas under isothermal and adiabatic conditions are as shown in the figure. AB → Isothermal expansion AC → Adiabatic expansion Which of the following options is not correct? (Odisha NEET…

Equal volumes of two monatomic gases, A and B at same temperature and pressure are mixed. The ratio of specific heats (CP/CV) of the mixture will be (2012)

For a reaction: X → Y + Z absolute entropies are X = 120 JK–1 mol–1 Y = 213.8 JK–1 mol–1 and Z = 197.9 JK–1 mol–1. What will be the entropy change at 298 K and 1 atm?

Standard enthalpy of vaporisation o vap H for water at 100°C is 40.66 kJ mol–1. The internal energy of vaporisation of water at 100°C (in kJ mol–1) is (2012)

In endothermic reactions,

In which of the following reactions, standard reaction entropy change (∆S°) is positive and standard Gibbs energy change (∆G°) decreases sharply with increasing temperature? (2012)

Enthalpy change for the reaction, 4H(g) 2H (g) → is – 869.6 kJ. The dissociation energy of H–H bond is (CBSE AIPMT 2011)

An ideal gas expands isothermally from 10–3 m3 to 10–2 m3 at 300 K against a constant pressure of 105 N m–2. The work done on the gas is (Odisha NEET 2019)

If the enthalpy change for the transition of liquid water to steam is 30 kJ mol–1 at 27°C, the entropy change for the process would be (2011)

Which of the following macroscopic variable is not measurable?

Thermodynamics is not concerned about____.

Thermodynamically, the most stable form of carbon