3911. Which of the following gasifiers can be attached to coal based fertiliser plants?
Lurgi (high pressure) gasifier
Kopper-Totzek gasifier
Gasifier working at 20 atm
Gasifier working at 40 atm
✅ The correct answer is option B.
Chemical Engineering
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3912. Isentropic process means a constant __________ process.
A. Enthalpy
B. Pressure
C. Entropy
D. None of these
✅ The correct answer is option C.
3913. Coal based fertiliser plants at Ramagundam (Andhra Pradesh) and Talchar (Orissa)
Use coal for heating purpose
Gasify coal to get hydrogen from coal gas
Use coal as filler in fertiliser
Use coal as conditioner in fertiliser
✅ The correct answer is option B.
3914. When pressure is applied on the system, ice ⟷ water, then
A. Equilibrium can not be established
B. More ice will be formed
C. More water will be formed
D. Evaporation of water will take place
✅ The correct answer is option C.
3915. In ammonia synthesis (N₂ + 3H₂ = 2NH₃), there is a decrease in total volume, hence to get high equilibrium conversion, the reaction should be carried out at
Low pressure
High pressure
Very high temperature
Atmospheric pressure; as the pressure has no effect on conversion
✅ The correct answer is option B.
3916. The equation relating E, P, V and T which is true for all substanes under all conditions is given by (∂E/∂V)T = T.(∂P/∂T)H – P . This equation is called the
A. Maxwell
B. Thermodynamic equation of state
C. Equation of state
D. Redlich-Kwong equation of state
✅ The correct answer is option B.
3917. Catalyst used in steam reforming of naphtha is
Bauxite
Cobalt
Nickel oxide on alumina support
Chromium
✅ The correct answer is option C.
3918. Conversion of yellow phosphorous to red phosphorous is done by heating it in covered retorts at __________ °C in absence of air.
50-80
250-400
1000-1200
800-900
✅ The correct answer is option B.
3919. In an ammonia plant, the purge off is essential to
Maintain inert gas concentration within a limit
Remove excess poisonous gases
Maintain H₂ : N₂ ratio at 3 :1
Remove uncondensed ammonia vapour
✅ The correct answer is option C.
3920. __________ is not a fertiliser.
Calcium ammonium nitrate
Ferrous sulphate
Liquid ammonia
Ammonium sulphate
✅ The correct answer is option B.