A.Body centred cubic (bcc)
B.Face centred cubic (fcc)
C.Orthorhombic
D.Cubic
Explanation: The correct answer is Body centred cubic (bcc).
Submitted by: Academy of Pakistan
Chemical Engineering MCQs: 8,342 practice questions with answer choices and available explanations. Page 201 of 557.
Chemical Engineering MCQs
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A.At low pressure, the yield of lighter hydrocarbons are more
B.Increased residence time results in the decreased severity of cracking
C.Greater depth of cracking gives lower octane number gasoline
D.Moderate changes in operating temperature does not change the depth of cracking
Explanation: The correct answer is Greater depth of cracking gives lower octane number gasoline.
Submitted by: Academy of Pakistan
A.5°C below the temperature at which oil ceases to flow
B.Multiple of 5°F
C.None of these
D.Multiple of 3°F
Explanation: The correct answer is 5°C below the temperature at which oil ceases to flow.
Submitted by: Academy of Pakistan
A.Is the most efficient of all refrigeration cycles
B.Requires relatively large quantities of air to achieve a significant amount of refrigeration
C.Has very low efficiency
D.Both B. and C
Explanation: The correct answer is Both B. and C.
Submitted by: Academy of Pakistan
A.keff = k + kg
B.keff = (kkg)1/2
C.keff = (k+ kg)/2
D.1/keff = 1/k + 1/kg
Explanation: The correct answer is 1/keff = 1/k + 1/kg.
Submitted by: Academy of Pakistan
A.Conduction
B.Radiation
C.Natural convection
D.Condensation
Explanation: The correct answer is Conduction.
Submitted by: Academy of Pakistan
A.Duralumin
B.Bronze
C.Solder
D.Monel metal
Explanation: The correct answer is Monel metal.
Submitted by: Academy of Pakistan
A.Brick
B.Silver
C.Water
D.Air
Explanation: The correct answer is Silver.
Submitted by: Academy of Pakistan
A.Attrition
B.Neither A. nor B.
C.Impact
D.Both A. & B.
Explanation: The correct answer is Both A. & B..
Submitted by: Academy of Pakistan
A.Rate of transfer of molecular momentum
B.Neither A. nor B.
C.Both A. and B.
D.Cohesion
Explanation: The correct answer is Both A. and B..
Submitted by: Academy of Pakistan
A.None of these
B.Decreasing size of product at constant size of feed
C.Increasing size of feed at constant reduction ratio
D.Decreasing machine capacity
Explanation: The correct answer is Increasing size of feed at constant reduction ratio.
Submitted by: Academy of Pakistan
A.Increased with decrease in pressure
B.Unchanged with pressure changes
C.Independent of temperature
D.Increases with rise in pressure
Explanation: The correct answer is Increases with rise in pressure.
Submitted by: Academy of Pakistan
A.Sharp melting point is not observed in thermoplastic polymers
B.Polythene generally has an excellent resistance to ultra violet rays
C.Polymeric fibres are never produced by addition polymerisation
D.Property of tackiness is exhibited by uncured rubber
Explanation: The correct answer is Polymeric fibres are never produced by addition polymerisation.
Submitted by: Academy of Pakistan
A.L/G
B.None of these
C.Always < 1
D.G/L
Explanation: The correct answer is L/G.
Submitted by: Academy of Pakistan
A.AD/V
B.A/V
C.D/V
Explanation: The correct answer is AD/V.
Submitted by: Academy of Pakistan