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- Question 1 of 15
If the temperature of saturated water is increased infinitesimally at constant entropy, the resulting state of water will beCorrectIncorrect
- Question 2 of 15
In a parallel flow heat exchanger operating under steady state, hot liquid enters at a temperature HI and leaves at a temperature HO . Cold liquid enters at a temperature CI and leaves at a temperature CO . Neglect any heat loss from the heat exchanger to the surrounding. If HI >> CI , then for a given time interval, which ONE of the following statements is true?CorrectIncorrect
- Question 3 of 15
For an exothermic reversible reaction, which one of the following correctly describes the dependence of the equilibrium constant ( K ) with temperature (T ) and pressure ( P ) ?CorrectIncorrect
- Question 4 of 15
Water is flowing under laminar conditions in a pipe of length L . If the diameter of the pipe is doubled, for a constant volumetric flow rate, the pressure drop across the pipeCorrectIncorrect
- Question 5 of 15
The local velocity of a fluid along a streamline can be measured byCorrectIncorrect
- Question 6 of 15
In a mixing tank operating at very high Reynolds number (> 10000 ), if the diameter of the impeller is doubled (other conditions remaining constant), the power required increases by a factor ofCorrectIncorrect
- Question 7 of 15
For heat transfer across a solid-fluid interface, which one of the following statements is NOT true when the Biot number is very small compared to 1?CorrectIncorrect
- Question 8 of 15
A solid sphere with an initial temperature Ta is immersed in a large thermal reservoir of temperature Tb . The sphere reaches a steady temperature after a certain time Tc . If the radius of the sphere is doubled, the time required to reach steady-state will beCorrectIncorrect
- Question 9 of 15
In the McCabe-Thiele diagram, if the x -coordinate of the point of intersection of the q -line and the vapor-liquid equilibrium curve is greater than the x -coordinate of the feed point, then the quality of the feed isCorrectIncorrect
- Question 10 of 15
For which of the following combinations, does the absorption operation become gas-film controlled?
P. The solubility of gas in the liquid is very high
Q. The solubility of gas in the liquid is very low
R. The liquid-side mass transfer coefficient is much higher than the gas-side mass transfer coefficient
S. The liquid-side mass transfer coefficient is much lower than the gas-side mass transfer coefficientCorrectIncorrect
- Question 11 of 15
The half-life of an nth order reaction in a batch reactor depends onCorrectIncorrect
- Question 12 of 15
I n petroleum refining, catalytic reforming is used to convertCorrectIncorrect
- Question 13 of 15
T he final boiling points of gasoline, diesel, atmospheric gas oil (AGO) and lubricating oils vary asCorrectIncorrect
- Question 14 of 15
T he main unit processes used for the production of hydrogen from natural gas are steam reforming (SR), pressure swing adsorption (PSA), low temperature water gas shift reaction (LT WGS) and high temperature water gas shift reaction (HT WGS). The correct sequence of these in the plant isCorrectIncorrect
- Question 15 of 15
A thermometer initially at 100°C is dipped at t = 0 into an oil bath, maintained at 150°C. If the recorded temperature is 130°C after 1 minute, then the time constant of thermometer (in min) isCorrectIncorrect