LMS

In thermodynamic, which one of the following is not a state function?

The environment in which a system is studied is

Work may be defined in terms of pressure-volume as

Which of the following process may be exothermic

Which of the following enthalpy change (∆Hº) is always endothermic

A reaction gives out heat. This means that

When bond formation energy is highs than bond breakage, then heat gives out i.e. exothermic Reaction in which heat evolves is called

All types of energies of particles forming a system is called

The amount of heat required to raise the temperature of a body through 10C is called

There are how many conventional ways to change the internal energy of system

The expression E = q + w is

An enthalpy change which is always exothermic

In a chemical reaction, if products are less stable then

Change in enthalpy of DH of a gaseous system can be calculated by following relationship

Standard enthalpies of formation of O₃, CO₂, NH₃ and HI are 142.2, -393.3, -46.2 and +25.9 kJ mol-1 respectively. The order of their increasing stabilities will be

Which one of the following reactions represent both standard enthalpy of combustion as well as standard enthalpy of formation

Which of the following values of heat of formation indicates that the product is most stable.

The condition for standard enthalpy change are

Which of the following is incorrect about enthalpy of neutralization

The enthalpy of formation of an ionic compound is -392 Kj / mol. Total energy changes (H_x ) involved in the formation of gaseous ions form normal physical state is 280 kJ / mole. The enthalpy of lattice (H_latt .) is

Which one indicates the H°_f of ionic compounds

Lattice energies are helpful in discussing the ————————– of ionic compounds.

Hess’s law is applicable for the determination of enthalpy of

Consider the following reactionsN₂ +2O₂ →2NO₂ ∆H = 92kJ 2NO +O₂ →2NO₂ ∆H = -158kJCalculate the enthalpy of reaction of NON₂ +O₂ → 2NO ∆H = kJ

Based on the following reactions C(graphite) + O₂ → CO₂(g) , →H = –394 kJ/mole and 2CO(g)+O₂(g) →2CO₂(g), H = –569 kJ/ mol, the heat of formation of CO will be

The net change in energy in a chemical reaction is same whether it takes place directly or indirectly. It is called

Find the oxidation state of ‘S’ in H ₂SO₄

The oxidation no. of Cr is___ in K ₂Cr₂ O ₇ or K2 ₂CrO₄ .

To balance oxygen in ion electron method in acidic solution, we add

2Cl ^-1 → Cl₂
The charges are balanced in above equation by adding

In the reaction 2 Fe + 3 Cl₂ → 2 FeCl₃

In a reaction, the oxidation number of Cr decreases by 3. This indicates that Cr is

Which is true about the reaction Mg + Cℓ₂ → MgCℓ₂

The direction of flow of electrons through external circuit in electrolytic cell is from

In the electrolysis of dil H₂ SO₄ using platinum electrode, what is true

In an electrolytic cell current flows in external circuit

The products of electrolysis of dilute aqueous sodium nitrate are

Which of the following has a spontaneous oxidation-reduction reaction?

Which of the following factors accounts for degree of dissociation of an electrolyte

Temperature for the measurement of standard electrode potential is

List of elements based on hydrogen scale is called

The standard reduction potential of Zn is

Select the correct statement about salt bridge

__________ is not there in all the galvanic cells
(I) Salt bridge (II) electrolyte (III) electrode

Which one of the following is not an inert electrode

If Cu(NO₃)₂ (aq) is electrolysed in presence of an inert electrode, product at cathode and at anode respectively

Which gas will be evolved at cathode during electrolysis of aq. CuCl₂ solution

Which of the following process will be spontaneous and endothermic

The oxidation no. of Mn in MnO₄^-2 is

In ion method to balance ‘O’ atoms water molecules added. 2Cl^-1 → Cl₂ + 2e- is an example of