Description : The firm is said to be in equilibrium when the difference between R and C is: A. Maximum B. Zero C. Minimum D. One
Last Answer : ANSWER: A
Description : Entropy change in case of reversible adiabatic process is (A) Minimum (B) Zero (C) Maximum (D) Indeterminate
Last Answer : (B) Zero
Description : If a system after undergoing a series of processes, returns to the initial state then (a) process is thermodynamically in equilibrium (b) process is executed in closed system cycle (c) its entropy will ... sum of heat and work transfer will be zero (e) no work will be done by the system.
Last Answer : Answer : d
Description : For reversible adiabatic process, change in entropy is (a) maximum (b) minimum (c) zero (d) unpredictable (e) negative
Last Answer : Answer : c
Description : Pick out the correct statement. (A) Like internal energy and enthalpy, the absolute value of standard entropy for elementary substances is zero (B) Melting of ice involves increase in enthalpy and ... of an ideal gas depends only on its pressure (D) Maximum work is done under reversible conditions
Last Answer : (D) Maximum work is done under reversible conditions
Description : 74. The maximum work attainable as the system comes in equilibrium with surrounding is called a) Energy b) Availability c) Exergy d) Entropy
Last Answer : Availability
Description : Under perfect market conditions a firm is said to be in equilibrium where (a) Total output is equal to total demand ; (b) Profit is the maximum; (c) Where the total revenue is maximum ; (d) Where total average cost is the minimum
Last Answer : (b) Profit is the maximum;
Description : Under perfect market conditions an Industry is said to be in equilibrium where (a) Total output is equal to total demand ; (b) Profit is maximum (c) Where the total revenue is maximum ; (d) Where total average cost is the minimum
Last Answer : (a) Total output is equal to total demand ;
Description : At "Break-even point", (1) the industry is in equilibrium in the long run. (2) the producers suffers the minimum losses (3) the seller earns maximum profit (4) the firm is at zero-profit point
Last Answer : (4) the firm is at zero-profit point Explanation: The break-even point (BEP) is the point at which cost or expenses and revenue are equal: there is no net loss or gain, and one has "broken even." For businesses, reaching the break-even point is the first major step towards profitability.
Description : At “Break-even point”, (1) the industry is in equilibrium in the long-run. (2) the producers suffers the minimum losses (3) the seller earns maximum profit (4) the firm is at zero-profit point
Last Answer : the firm is at zero-profit point
Description : Pick out the wrong statement. (A) The net change in entropy in any reversible cycle is always zero (B) The entropy of the system as a whole in an irreversible process increases (C) The ... to a maximum (D) The entropy of a substance does not remain constant during a reversible adiabatic change
Last Answer : (D) The entropy of a substance does not remain constant during a reversible adiabatic change
Description : Pick out the wrong statement. (A) Minimum number of degree of freedom of a system is zero (B) Degree of freedom of a system containing a gaseous mixture of helium, carbon ... ) Enthalpy and internal energy change is zero during phase change processes like melting, vaporisation and sublimation
Last Answer : (D) Enthalpy and internal energy change is zero during phase change processes like melting, vaporisation and sublimation
Description : When a system is in equilibrium for all possible processes, the differential or finite change of entropy is (A) < 0 (B) > 0 (C) = 0 (D) None of these
Last Answer : (A) < 0
Description : A solid metallic block weighing 5 kg has an initial temperature of 500°C. 40 kg of water initially at 25°C is contained in a perfectly insulated tank. The metallic block is brought into contact with water. Both of them come to equilibrium. ... .kg-1, K-1is (A) -1.87 (B) 0 (C) 1.26 (D) 3.91
Last Answer : (B) 0
Description : The change that the system that undergoes from one equilibrium state to another is known as a. oath b. process c. enthalpy change d. entropy change
Last Answer : process
Description : It is a common observation that naturally occurring processes have a particular direction associated with them. For instance, heat flows from a hot body to a colder body. The property of a system ... this natural direction of events is called w) energy x) entropy y) enthalpy z) equilibrium
Last Answer : ANSWER: X -- ENTROPY
Description : 18.4 g of `N_(2)O_(4)` is taken in a 1 L closed vessel and heated till the equilibrium is reached. `N_(2)O_(4(g))rArr2NO_(2(g))` At equilibrium it is
Last Answer : 18.4 g of `N_(2)O_(4)` is taken in a 1 L closed vessel and heated till the equilibrium is reached. `N_(2)O_(4 ... constant? A. 0.2 B. 2 C. 0.4 D. 0.8
Description : In a market economy equilibrium price is reached at (a) Point of interaction of aggregate demand and aggregate supply curve; (b) At the top of demand curve ; (c) Midpoint of demand curve ; (d) Midpoint of supply curve
Last Answer : (a) Point of interaction of aggregate demand and aggregate supply curve;
Description : Gibbs free energy at constant pressure and temperature under equilibrium conditions is (A) ∞ (B) 0 (C) Maximum (D) Minimum
Last Answer : (D) Minimum
Description : At what Kelvin temperature does entropy have the minimum value?
Last Answer : ANSWER: ZERO
Description : Pick out the wrong statement. (A) Cp of monatomic gases such as metallic vapor is about 5 kcal/kg.atom (B) The heat capacity of solid inorganic substance is exactly equal to the ... isolated system (D) At absolute zero temperature, the heat capacity for many pure crystalline substances is zero
Last Answer : (C) There is an increase in entropy, when a spontaneous change occurs in an isolated system
Description : Entropy, which is a measure of the disorder of a system, is: (A) Independent of pressure (B) Independent of temperature (C) Zero at absolute zero temperature for a perfect crystalline substance (D) All (A), (B) & (C)
Last Answer : (C) Zero at absolute zero temperature for a perfect crystalline substance
Description : In case of absorption & stripping, the interface of the liquid & gas phases are present in equilibrium, when the diffusional resistance of __________ is zero. (A) Interface (B) Gas phase (C) Liquid phase (D) All 'a', 'b' & 'c'
Last Answer : (A) Interface
Description : A catalyst is said to be a negative catalyst, if it (A) Retards the rate of reaction (B) Reduces the value of equilibrium constant (C) Does not initiate the reaction (D) All (A), (B) and (C)
Last Answer : (A) Retards the rate of reaction
Description : Boundary layer separation occurs when the (A) Pressure reaches a minimum (B) Cross-section of the channel is reduced (C) Valve is closed in a pipeline (D) Velocity of sound is reached
Last Answer : (B) Cross-section of the channel is reduced
Description : In a reversible chemical reaction (where, Δx = number of moles of products-number of moles of reactants) (A) Addition of inert gas favours the forward reaction, when Δx is positive (B) Pressure has no effect on equilibrium, when Δn = ... any value of Δx (+ ve, - ve) or zero) (D) All 'a', 'b' & 'c'
Last Answer : D) All 'a', 'b' & 'c'
Description : The shaft is always stepped with ________ diameter at the middle portion and __________ diameter at the shaft ends. a) Minimum, maximum b) Maximum, minimum c) Minimum, minimum d) Zero, infinity
Last Answer : b) Maximum, minimum
Description : A soil mass is said to be in plastic equilibrium if (A) It is stressed to maximum (B) It is on the verge of failure (C) It is in plastic stage (D) It starts flowing
Last Answer : Answer: Option B
Description : Pick out the wrong statement: (A) The expansion of a gas in vacuum is an irreversible process (B) An isometric process is a constant pressure process (C) Entropy change for a reversible adiabatic process is zero (D) Free energy change for a spontaneous process is negative
Last Answer : (B) An isometric process is a constant pressure process
Description : "At the absolute zero temperature, the entropy of every perfectly crystalline substance becomes zero". This follows from the (A) Third law of thermodynamics (B) Second law of thermodynamics (C) Nernst heat theorem (D) Maxwell's relations
Last Answer : (A) Third law of thermodynamics
Description : For a spontaneous process, free energy (A) Is zero (B) Increases (C) Decreases whereas the entropy increases (D) And entropy both decrease
Last Answer : C) Decreases whereas the entropy increases
Description : The absolute entropy for all crystalline substances at absolute zero temperature is (A) Zero (B) Negative (C) More than zero (D) Indeterminate
Last Answer : (A) Zero
Description : A submerged body is said to be in a stable equilibrium, if its centre of gravity __________ the centre of buoyancy. (A) Coincides with (B) Lies below (C) Lies above (D) None of these
Description : If a body floating in a liquid occupies a new position and remains at rest in this new position, when given a small angular displacement, the body is said to be in __________ equilibrium. (A) Neutral (B) Stable (C) Unstable (D) None of these
Last Answer : Answer: Option A
Description : In 1928 Herbert Hoover said America has come nearer to the abolition of poverty than humanity has ever reached before. What group of Americans at that time would disagree with his statement?
Last Answer : farmers
Description : When dew point la reached it is said that at that temperature (a) the atmosphere is said to be saturated with water vapour (b) the relative humidity of the atmosphere is 100% (c) the atmosphere can hold no more water vapour (d) All the above
Last Answer : Ans: (a)
Description : He claimed that he had set himself three goals in life: to be the greatest economist in the world, to be the best horseman in all of Austria and the greatest lover in all of Vienna ... said which two. Identify this economist after whom The Economist named a column on business and management.
Last Answer : Joseph Schumpeter.
Description : At the center line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be (A) Minimum (B) Maximum (C) Zero (D) Could be any value
Last Answer : Answer: Option D
Description : In the plane of the A.C generator coil is perpendicular to the field, then induced emf in the coil is: a. Maximum b. minimum c. zero d. intermediate value
Last Answer : b. minimum
Description : The Firm is at equilibrium where: A. Output is maximum B. Profit is Maximum C. Revenues are Maximum D. Profit is Minimum
Last Answer : ANSWER: B
Description : A firm is in equilibrium when its (1) marginal cost equals the marginal revenue (2) total cost is minimum (3) total revenue is maximum (4) average revenue and marginal revenue are equal
Last Answer : (1) marginal cost equals the marginal revenue Explanation: A consumer is in a state of equilibrium when he achieves maximum aggregate satisfaction on the expenditure that he makes depending on the ... its production. In short run Marginal revenue = Marginal Cost is the condition of equilibrium.
Last Answer : marginal cost equals the marginal revenue
Description : Has anybody reached absolute zero?
Last Answer : I just ran my AWD Forester off the icy curve in my long driveway. By the time the AAA truck found me, I felt as tho I had reached 0˚ K.
Description : Maximum equilibrium conversion for endothermic reaction is obtained at the __________ temperature. (A) Highest possible (B) Lowest possible (C) Intermediate (D) Room
Last Answer : (A) Highest possible
Description : The ability of Vibrio fischerito produce bioluminescence chemicals only when a certain population density has been reached is an example of A.Liebig's law of the minimum B.Shelford's law of tolerance C.quorum sensing D.Heisenberg's principle of uncertainty
Last Answer : C.quorum sensing
Description : Second order consecutive irreversible reaction as shown in the bellow figure, were carried out in a constant volume isothermal batch reactor with different initial feed compositions. Reactor temperature was same in all the cases. In experiments ... constants (k1 /k2 )? (A) 1/4 (B) 1/2 (C) 2 (D) 4
Last Answer : (A) 1/4
Description : Entropy is a measure of the __________ of a system. (A) Disorder (B) Orderly behaviour (C) Temperature changes only (D) None of these
Last Answer : (A) Disorder
Description : It has been said that the universe will die an "entropy death". This means that: w) the universe will eventually explode. x) the universe will be at the same temperature everywhere. y) the universe will collapse into a black hole. z) matter and antimatter will never combine.
Last Answer : ANSWER: X -- THE UNIVERSE WILL BE AT THE SAME TEMPERATURE EVERYWHERE.