For an exothermic reaction
Only enthalpy change (ΔH) is negative
Only internal energy change (ΔE) is negative
Both ΔH and ΔE are negative
Enthalpy change is zero
- The rate at which a substance reacts is proportional to its active mass and the rate of a chemical reaction…
- Which of the following is not a unit of the equilibrium constant Kp? (where, Δx = number of moles…
- The following heat engine produces power of 100,000 kW. The heat engine operates between 800 K and 300…
- Henry's law is closely obeyed by a gas, when its __________ is extremely high.
- The number of degrees of freedom for an azeotropic mixture in a two component vapour-liquid equilibria…
- What is the degree of freedom for a system comprising liquid water equilibrium with its vapour?
- Any substance above its critical temperature exists as
- At __________ point, all the three phases (i.e. solid, liquid and gas) co-exist.
- The first law of thermodynamics is a restatement of the law of conservation of
- Third law of thermodynamics is concerned with the
- Generation of heat by friction is an example of a/an __________ change.
- The number of degrees of freedom for a mixture of ice and water (liquid) are
- The value of Joule-Thomson co-efficient, in case where cooling occurs after the throttling process is
- Which of the following is not a common refrigerant?
- Which of the following equations is obtained on combining 1st and 2nd law of thermodynamics, for a system…
- Requisites of a reversible process is that the
- The kinetic energy of gas molecule is zero at
- If we increase the pressure on a substance (which is at its triple point), then the triple point
- Which of the following processes cannot be made reversible even under ideal condition of operation?
- Melting of ice is an example of an __________ process.
- __________ does not change during phase transformation processes like sublimation, melting & vaporisation.
- When liquid and vapour phase of multi-component system are in equilibrium (at a given temperature and…
- A refrigeration cycle is the same as a __________ cycle,
- If heat contents of CH4, C2H4 and C3H8 are -17.9, 12.5 and -24.8 kcal/mole respectively, than ΔH…
- Pick out the wrong statement.
- Which of the following has the minimum value of COP for a given refrigeration effect?
- (1/V) (∂V/∂T)P is the mathematical expression
- Internal energy of an element at 1 atm and 25° C is __________ kcal/kg.mole.
- The most important application of distribution law is in
- Ideal gas law is applicable at