Related Questions

The composition of fresh feed to the high temperature, high pressure urea autoclave is
A Excess liquid ammonia and liquefied CO2
B Excess liquid ammonia and compressed CO2 gas
C Liquid ammonia and excess compressed CO2
D Compressed ammonia gas and excess compressed CO2
Urea autoclave is made of
A Cast iron
B Refractory blocks
C Stainless steel
D Lead lined steel
Prilling of urea should be accomplished (in a sprayer) just above the melting point of urea with minimum of retention time, otherwise it will result in
A Low bulk density product
B Biuret formation
C Non-spherical prills
D Substantially wet non-flowing and sticky product
The reaction A (l) R(g) is allowed to reach equilibrium conditions in an autoclave. At equilibrium, there are two phases, one a pure liquid phase of A and the other a vapor phase of A, R and S. Initially A alone is present. The number of degrees of freedom are
A 1
B 2
C 3
D 0
Autoclave এর কাজ-
A ভাইরাস ধ্বংশ করা
B টিটেনাস জীবানু মারা
C ফাংগাস ধ্বংশ করা
D সব জীবানু সম্পূর্ণ ধ্বংশ করা
A reactor is generally termed as an autoclave, when it is a
A High pressure batch reactor
B Atmospheric pressure tank reactor
C High pressure tubular reactor
D Atmospheric pressure CSTR
Which bacteria do not destroy without autoclave?
A Aerobic bacteria
B Anaerobic bacteria
C Spore bearing bacteria
D Rod shape bacteria
With increases in pressure, the conversion of ammonium carbamate into urea
A Increases
B Decreases
C Remains unaltered
D Can either increase or decrease depends on biuret content
Lower temperature and large excess of ammonia in urea melt
A Increases biuret formation
B Decreases biuret formation
C Is undersirable
D Does not effect biuret formation
In a compound steam engine, the first stage of expansion is carried out in a high pressure cylinder whereas the last expansion is completed in low pressure cylinder. The diameter of high pressure cylinder is _________ the low pressure cylinder.
A Equal to
B Less than
C More than
D None of these

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