Chemistry Question Bank

Find rH at 320 K for the reaction is:

Find r S at 320 K for the reaction is:

Match List I with List II and select the correct answer using the codes given below the lists: List – I List – II A. T G P

Assertion: A process is called adiabatic if the system does not exchange heat with the surroundings. Reason: It does not involve increase or decrease in temperature of the system

Assertion: Entropy is always constant for a closed system. Reason: Closed system is always reversible.

Assertion: In isothermal process, whole of heat energy supplied to the system is converted into internal energy. Reason: According to the first law of thermodynamics U = q - w

The heat of formation of Fe O s is –824.2 kJ mol–1. ∆H for the reaction. 2Fe O s 4Fe s 3O g → is:

Assertion: For an isolated system, q is zero. Reason: In an isolated system, change in U and V is zero.

Assertion: Addition of Q and w gives ΔU. Reason: Addition of two path functions cannot give state function.

One mole of an ideal diatomic gas (Cv = 5 cal) was transformed from initial 25°C and 1 L to the state when temperature is 100°C and volume 10 L. The entropy change of the process can be expressed as (R = 2 calories/mo…

Assertion: A reaction which is spontaneous and accompanied by decrease of randomness must be exothermic. Reason: All exothermic reactions are accompanied by decrease in randomness.

Which of the following is intensive property?

Which of the following processes is a non-spontaneous process?

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

For irreversible expansion of an ideal gas under isothermal condition, the correct option is (NEET 2021)

Assertion: Entropy of system increases for a spontaneous reaction. Reason: Enthalpy of reaction always not decreases for spontaneous reaction.

Two moles of Helium gas undergo a reversible cyclic process as shown in figure. Assuming gas to be ideal. What is the work done for the process C to D?

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

For the reaction, 8 g 2 g 2 g l C H 5O 3CO 4H O → at constant temperature, H E is (2003)

Which of the following are extensive properties?

The densities of graphite and diamond at 298 K are 2.25 and 3.31 g cm–3, respectively. The standard free energy difference ( G ) is equal to 1895 J mol–1, the pressure at which graphite will be transformed into diamon…

A reaction occurs spontaneously if (2005)

Assume each reaction is carried out in an open container. For which reaction will H = E ? (CBSE AIPMT 2006) (a) H (g) Br (g) 2HBr(g) → (b) C(s) 2H O(g) 2H (g) CO (g) → (c) PCl (g) PCl (g) Cl (g) → (d) 2CO(g) O (g) 2CO…

If boiling point of water is 1000C. How much gram of NaCl is added in 500 g of water to increase its boiling point by approx o b H O 1 C K 0.52K kg / mole. x (AllMS 2019)

The mixture which shows positive deviation from Raoult’s law is: (NEET 2020)