Which of the following is true for an adiabatic process ?

1. ΔH = 0

2. ΔW = 0

3. ΔQ = 0

4. ΔV = 0

Which of the following is not a state function?

1. Internal energy

2. Enthalpy

3. Work

4. Entropy

Which of the following properties is an intensive property?

1. Mass

2. Volume

3. Surface tension

4. Enthalpy

The first law of thermodynamics is a statement of:

1. Conservation of mass

2. Conservation of linear momentum

3. Conservation of energy

4. Conservation of angular momentum

A mixture of two moles of carbon monoxide and one mole of oxygen, in a closed vessel is ignited to convert the carbon monoxide to carbon dioxide. If ΔH is the enthalpy change and ΔE is the change in internal energy, then:
1. ΔH > ΔE
2. ΔH < ΔE
3. ΔH = ΔE
4. The relationship depends on the capacity of the vessel

The relation between ΔE and ΔH is [MP PET 1992; MP PMT 1996; MP PET/PMT 1998]

1. $\mathrm{\Delta H}=\mathrm{\Delta E}-\mathrm{P}\hspace{0.17em}\mathrm{\Delta V}$

2. $\mathrm{\Delta H}=\mathrm{\Delta E}+\mathrm{P}\hspace{0.17em}\mathrm{\Delta V}$

3. $\mathrm{\Delta E}=\mathrm{\Delta V}+\mathrm{\Delta H}$

4. $\mathrm{\Delta E}=\mathrm{\Delta H}+\mathrm{P}\hspace{0.17em}\mathrm{\Delta V}$

At constant T and P, which one of the following statements is correct for the reaction, $\mathrm{CO}\left(g\right)+\frac{1}{2}{\mathrm{O}}_2\left(g\right)\to {\mathrm{CO}}_2\left(g\right)$

(1) ΔH is independent of the physical state of the reactants of that compound

(2) ΔH > ΔE

(3) ΔH < ΔE

(4) ΔH = ΔE

For the reaction of one mole of zinc dust with one mole of sulphuric acid in a bomb calorimeter, ΔU and w correspond to

(1) $\mathrm{\Delta }U<0,\hspace{0.17em}w=0$

(2) $\Delta \text{U}=0,w<0$

(3) $\Delta \text{U}>0,w=0$

(4) $\Delta \text{U}<0,w>0$

If ΔH is the change in enthalpy and ΔE the change in internal energy accompanying a gaseous reaction

(1) ΔH is always greater than ΔE

(2) ΔH < ΔE only if the number of moles of the products is greater than the number of the reactants

(3) ΔH is always less than ΔE

(4) ΔH < ΔE only if the number of moles of the products is less than the number of moles of the reactants

Enthalpy for the reaction C + O₂ → CO₂ is-

1. Positive

2. Negative

3. Zero

4. None