Chemical Engineering Basics Mcqs
Q.1: Pick out the wrong statement?
A. Processing of thermosetting plastics is ideally done by injection mouldingJ
B. Processing of thermoplastics is ideally done by compression mouldingD
C. Mass production of seamless pipes are done by electrical resistance welding (ERW)Q
D. Stretch forming is a process of cold drawing,
Q.2: Pick out the correct statement ?
A. Jet engine can work, where there is no atmosphere1
B. Rocket engines cannot work, where there is no atmosphere8
C. Rocket engines carry oxygen required for the combustion in the form of oxidiserO
D. Jet engines also carry oxidiser
Q.3: Pick out the wrong statement ?
A. The X-rays cannot be deflected by electric field unlike cathode raysD
B. The intensity of X-rays can be measured by ionisation current produced due to the ionisation\
C. of gas by X-rays
D. The quality of X-rays can be controlled by varying the anode-cathode voltageL
Q.4: Pick out the wrong statement ?
A. Geothermal energy is a non-conventional source of energy8
B. Mass is converted into energy in both nuclear fission & fusion reactionG
C. Inhalation of mercury vapour is not harmful for human beings<
D. Inhalation of arsenic causes cancer#
Q.5: Pick out the wrong statement?
A. Ductile fracture of a stressed material, which exhibits a large plastic deformation is commonly_
B. caused by the formation and coalescence of voids in the necked regionE
C. Brittle fracture is caused by the propagation of pre-existing cracks in the material and involves minimum plastic deformation}
D. Fatigue fracture of a material is always brittle in nature and takes place due to the existence ofb
Q.6: Pick out the wrong statement ?
A. The equivalent stiffness of two springs (of equal stiffness S) in series is S/2 while in parallelg
B. is 2S
C. For a helical spring, deflection is proportional to D3 (D = mean coil diameter) or d4 (d = wire_
D. diameter)
Q.7: Steel produced from phosphatic iron is _______________ in nature?A
A. Malleable
B. Ductile
C. Brittle
D. Tough
Q.8: Though tin occurs lower than iron in the electrochemical series, yet it is coated on steel for corrosion protection, because of its________________?
A. Lower cost
B. Abundant availability
C. Resistance to vegetable acids as the tin plate are commercially used in canning industry^
D. None of these
Q.9: Parallel straight line pattern of temperature distribution for both hot and cold fluids is observed in case of heat exchanger of the type________________?
A. Parallel flow with equal heat capacities(
B. Counter flow with equal heat capacities'
C. Counter flow with unequal heat capacities)
D. Parallel flow with unequal heat capacities*
Q.10: Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m2 .k), when the insulation thickness is ________________ mm?
A. 15
B. 25
C. 10
D. 30

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