Related Questions
What is the correct answer?
4
In reactions involving solids and liquids (where change in volume is negligible), the heat of reaction at constant pressure as compared to that at constant volume is
D. Unpredictable; depends on the particular reaction
What is the correct answer?
4
Efficiency of a Carnot engine working between temperatures T1 and T2 (T1 < T) is
What is the correct answer?
4
For a spontaneous process, free energy
C. Decreases whereas the entropy increases
D. And entropy both decrease
What is the correct answer?
4
Which of the following represents the Virial equation of state?
A. T = [RT/(V- b)] - [a/√T. V(V + b)]
B. PV/RT = 1 + (B/V) + (C/V2) + ……
What is the correct answer?
4
The total change in the enthalpy of a system is independent of the
A. Number of intermediate chemical reactions involved
B. Pressure and temperature
C. State of combination and aggregation in the beginning and at the end of the reaction
What is the correct answer?
4
When liquid and vapour phase of multi-component system are in equilibrium (at a given temperature and pressure), then chemical potential of each component is
A. Same in both the phases
B. Zero in both the phases
What is the correct answer?
4
Maximum work that could be secured by expanding the gas over a given pressure range is the __________ work.
What is the correct answer?
4
Critical temperature is defined as the temperature above which a gas will
A. Not liquify (barring exceptions)
C. Never liquify however high the pressure may be
What is the correct answer?
4
In which of the following reaction equilibrium, the value of equilibrium constant Kp will be more than is Kc?
What is the correct answer?
4
Co-efficient of performance for a reversed Carnot cycle working between temperatures T1 and T2 (T1 > T2) is
What is the correct answer?
4
The expression, nCv(T2 - T1), is for the __________ of an ideal gas.
A. Work done under adiabatic condition
B. Co-efficient of thermal expansion
What is the correct answer?
4
Measurement of thermodynamic property of temperature is facilitated by __________ law of thermodynamics.
What is the correct answer?
4
A system is said to be at equilibrium, if the entropy of the system has reached __________ value.
What is the correct answer?
4
If two pure liquid constituents are mixed in any proportion to give an ideal solution, there is no change in
What is the correct answer?
4
Activity co-efficient is a measure of the
A. Departure from ideal solution behaviour
B. Departure of gas phase from ideal gas law
C. Vapour pressure of liquid
What is the correct answer?
4
Standard temperature and pressure (S.T.P.) is
What is the correct answer?
4
In a homogeneous solution, the activity coefficient of a component depends upon the
What is the correct answer?
4
The unit of equilibrium constant of a chemical reaction is the same as that of
What is the correct answer?
4
For multi-component multiple phases to be in equilibrium at the same pressure and temperature, the __________ of each component must be same in all phases.
What is the correct answer?
4
Which of the following is not a reversible process?
A. Expansion of an ideal gas against constant pressure
B. Atmospheric pressure vaporisation of water at 100°C
C. Solution of NaCl in water at 50°C
What is the correct answer?
4
The kinetic energy of gas molecule is zero at
What is the correct answer?
4
The activity of an ideal gas is numerically __________ its pressure.
D. Data insufficient, can't be predicted
What is the correct answer?
4
Absolute zero temperature signifies the
A. Minimum temperature attainable
B. Temperature of the heat reservoir to which a Carnot engine rejects all the heat that is taken in
C. Temperature of the heat reservoir to which a Carnot engine rejects no heat
What is the correct answer?
4
In the reaction, C + O2 → CO2; ΔH = - 94 kcal. What is the heat content (enthalpy) of O2?
What is the correct answer?
4
Change of heat content when one mole of compound is burnt in oxygen at constant pressure is called the
What is the correct answer?
4
The expression for entropy change given by, ΔS = nR ln (V2/V1) + nCv ln (T2/T1) is valid for
A. Reversible isothermal volume change
B. Heating of a substance
C. Cooling of a substance
D. Simultaneous heating and expansion of an ideal gas
What is the correct answer?
4
The most important application of distribution law is in
What is the correct answer?
4
What is the value of ln y (where y = activity co-efficient) for ideal gases?
What is the correct answer?
4
A cylinder contains 640 gm of liquid oxygen. The volume occupied (in litres) by the oxygen, when it is released and brought to standard conditions (0°C, 760 mm Hg) will be __________ litres.
D. Data insufficient; can't be computed
What is the correct answer?
4
With increase in pressure (above atmospheric pressure), the Cp of a gas
D. First decreases and then increases