A.Cellulose nitrate
B.Nitro-glycerine
C.All A, B., and C.
D.Trinitrotoluene (TNT)
Explanation: The correct answer is All A, B., and C..
Submitted by: Academy of Pakistan
Chemical Engineering MCQs: 8,342 practice questions with answer choices and available explanations. Page 81 of 557.
Chemical Engineering MCQs
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A.Head & discharge
B.Friction factor & diameter
C.Length & diameter
D.Length & discharge
Explanation: The correct answer is Head & discharge.
Submitted by: Academy of Pakistan
A.Toys making
B.Electrical insulation
C.Packaging
D.Coating and films
Explanation: The correct answer is Coating and films.
Submitted by: Academy of Pakistan
A.In case of a shell and tube heat exchanger, the pressure drop through the shell is proportional to the number of times the fluid crosses the bundle between baffles
B.Propagation velocity for travel of heat radiation through vacuum is equal to the velocity of the light
C.Heat transfer by radiation cannot occur across an absolute volume
D.The amount of heat involved in the condensation or vaporisation of 1 kg of a fluid is the same
Explanation: The correct answer is Heat transfer by radiation cannot occur across an absolute volume.
Submitted by: Academy of Pakistan
A.Are better conductor of electricity at higher temperature
B.Crystallise faster
C.Resist greater tensile stress at room temperature
D.Have higher melting temperature
Explanation: The correct answer is Have higher melting temperature.
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A.A gas bubble at a pressure of Pg is passed through a solvent with a saturation vapour pressure of Ps. If the time of passage of the bubble is long and air is insoluble in the solvent, the mole fraction of solvent in the bubble will be equal to Ps/Pg
B.To make 100 kg of a solution containing 40% salt by mixing solution A (containing 25% salt) and solution B (containing 50% salt), the amount of solution A required is 40 kg
C.A supersaturated solution of a sparingly soluble solute, at a concentration of C, is being fed to a crystalliser at a volumetric flow rate of V. The solubility.of the solute is C1. The output rate of solids from an efficient crystalliser is (C + C1) V
D.1.2 gm atoms of carbon and 1.5 gm moles of oxygen are reacted to give 1 gm mole of carbon dioxide. The limiting reactant is carbon. The percent excess reactant supplied is 25
Explanation: The correct answer is A supersaturated solution of a sparingly soluble solute, at a concentration of C, is being fed to a crystalliser at a volumetric flow rate of V. The solubility.of the solute is C1. The output rate of solids from an efficient crystalliser is (C + C1) V.
Submitted by: Academy of Pakistan
A.Ball mills
B.Tube mills
C.Compartment mills
D.Jaw crushers
Explanation: The correct answer is Jaw crushers.
Submitted by: Academy of Pakistan
A.Is a non-banded coal which can be ignited easily with a match stick or candle flame, hence is
B.Has a high volatile matter content and burns with a luminous smoky flame
C.Is non-coking
D.All A., B. and C.
Explanation: The correct answer is All A., B. and C..
Submitted by: Academy of Pakistan
The driving potential for the crystal growth during crystallisation is the ________ of the solution?
0A.Concentration
B.Super-saturation
C.Density
D.Viscosity
Explanation: The correct answer is Super-saturation.
Submitted by: Academy of Pakistan
A.8
B.12
C.18
D.2
Explanation: The correct answer is 2.
Submitted by: Academy of Pakistan
A.And backward reaction equally
B.To a greater extent than that of the backward reaction
C.Only
D.And decreases that of backward reaction
Explanation: The correct answer is And backward reaction equally.
Submitted by: Academy of Pakistan
A.Cannot use coking coal
B.Can give ammonia synthesis gas (H2 + N2)
C.Is a moving bed reactor
D.Operate at very high pressure
Explanation: The correct answer is Can give ammonia synthesis gas (H2 + N2).
Submitted by: Academy of Pakistan
A.Of its flexibility and nearly constant efficiency under varying conditions of operation
B.It eliminates the foaming and entrainment tendency during operation
C.It incurs less pressure drop as compared to any other try designed for the same duty
D.None of these
Explanation: The correct answer is Of its flexibility and nearly constant efficiency under varying conditions of operation.
Submitted by: Academy of Pakistan
A.None of these
B.For accelerating fruit formation in later stage of growth
C.To lessen the effect of excessive potash application
D.During the early stage of growth to promote development of stem and leaves
Explanation: The correct answer is During the early stage of growth to promote development of stem and leaves.
Submitted by: Academy of Pakistan
A.Energy is constant along a stream line, but may vary across stream lines
B.Velocity is constant along a stream line
C.None of these
D.Energy is constant throughout the fluid
Explanation: The correct answer is Energy is constant along a stream line, but may vary across stream lines.
Submitted by: Academy of Pakistan