A.2
B.1
C.0
D.3
Explanation: The correct answer is 2.
Submitted by: Academy of Pakistan
Chemical Engineering MCQs: 8,342 practice questions with answer choices and available explanations. Page 49 of 557.
Chemical Engineering MCQs
Showing page 49 of 557 · 8,342 total solved questions available.
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A.Tungsten steel
B.Nickel-chrome steel
C.Molybdenum steel
D.Cobalt steel
Explanation: The correct answer is Nickel-chrome steel.
Submitted by: Academy of Pakistan
A.Electrons
B.Gamma rays & neutrons
C.β-rays
D.α-rays
Explanation: The correct answer is Gamma rays & neutrons.
Submitted by: Academy of Pakistan
A.Equal
B.Unpredictable
C.Less
D.More
Explanation: The correct answer is Less.
Submitted by: Academy of Pakistan
A.Type of orifice & the Reynolds number
B.Pipe length
C.Pipe diameter
D.Ratio of pipe diameter to orifice diameter
Explanation: The correct answer is Pipe length.
Submitted by: Academy of Pakistan
A.The ash retains the sulphur & phosphorus and thus affects the quality of products in
B.All A., B. and C.
C.The ash in molten condition gets absorbed in the pores of the refractory lining of the furnace
D.It is abrasive to the coal pulveriser (i.e. ball mill) and the combustion chamber
Explanation: The correct answer is All A., B. and C..
Submitted by: Academy of Pakistan
A.(Free from silica) have better thermal fatigue resistance than silica and magnesite refractories.
B.Are resistant to basic slag
C.Are bonded with lime and clay
D.All A., B. and C.
Explanation: The correct answer is All A., B. and C..
Submitted by: Academy of Pakistan
A.Saybolt chromometer
B.Cleveland apparatus
C.Colour comparator
D.None of these
Explanation: The correct answer is Colour comparator.
Submitted by: Academy of Pakistan
A.√d
B.d2/3
C.d2
D.d1/3
Explanation: The correct answer is √d.
Submitted by: Academy of Pakistan
A.For a helical spring, deflection is proportional to D3 (D = mean coil diameter) or d4 (d = wire
B.The equivalent stiffness of two springs (of equal stiffness ‘S’) in series is S/2 while in parallel
C.Modulus of resilience is proportional to (stress at elastic limit)2
D.Crushing load or columns is less than the buckling load
Explanation: The correct answer is Crushing load or columns is less than the buckling load.
Submitted by: Academy of Pakistan
A.Cast iron
B.Pig iron
C.Wrought iron
D.None of these
Explanation: The correct answer is Cast iron.
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A.Coating and adhesive
B.Fibre reinforced plastic (FRP)
C.Thermal insulation in refrigerator
D.Automobile cushion
Explanation: The correct answer is Fibre reinforced plastic (FRP).
Submitted by: Academy of Pakistan
A.Does not alter its calorific value
B.Is not possible on commercial scale
C.Increases its calorific value
D.Decreases its calorific value
Explanation: The correct answer is Increases its calorific value.
Submitted by: Academy of Pakistan
A.Nusselt number
B.Heating volume
C.Heat transfer area
D.None of these
Explanation: The correct answer is Heat transfer area.
Submitted by: Academy of Pakistan
A.Same COP
B.Decreased COP
C.Increased COP
D.Increased or decreased COP; depending upon the type of refrigerant
Explanation: The correct answer is Increased COP.
Submitted by: Academy of Pakistan