A. +ve
B. 0
C. -ve
D. ∞
✅ The correct answer is option A.
Engineering
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3932. Entropy change of the reaction, H₂O(liquid) H₂O(gas), is termed as the enthalpy of
A. Solution
B. Vaporisation
C. Formation
D. Formation
✅ The correct answer is option B.
3933. Ammonia synthesis reaction is
Exothermic
Endothermic
Autocatalytic
None of these
✅ The correct answer is option A.
3934. P₂O₅ content in superphosphate is about __________ percent.
30-35
15-20
65-70
85-90
✅ The correct answer is option B.
3935. Which of the following is not a measure component necessarily to be present in fertilisers?
Nitrogen
Potassium
Phosphorous
Sulphur
✅ The correct answer is option D.
3936. At equilibrium condition, the chemical potential of a material in different phases in contact with each other is equal. The chemical potential for a real gas (μ) is given by(where, μ = standard chemical potential at unit fugacity (f° = 1 atm.) and the gas behaves ideally.)
A. μ° + RT ln f
B. μ°+ R lnf
C. μ° + T lnf
D. μ° + R/T lnf
✅ The correct answer is option A.
3937. The expression for the work done for a reversible polytropic process can be used to obtain the expression for work done for all processes, except reversible __________ process.
A. Isobaric
B. Isothermal
C. Adiabatic
D. None of these
✅ The correct answer is option B.
3938. Which of the following is used to set the diameter of the distillation column ?
Number of theorectical plates.
Static submergence.
Allowable vapour velocity.
Length of straight rectangular weir on cross-flow tray.
✅ The correct answer is option C.
3939. For identical operating conditions, the pressure drop over __________ tray is the highest out of the following.
sieve
valve
counterflow
bubble cap
✅ The correct answer is option D.
3940. Pick out the wrong statement pertaining to the design of a basket type evaporator.
It is used for high viscosity liquor having large rate of scaling.
The tube bundle is suspended on bracket.
There is no central downtake.
Downtake is formed by the annular space between the bundle and the shell.
✅ The correct answer is option A.