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.Management Sciences
Category: Chemical Engineering Basics
Exposure to _________________ accelerates the degradation of plastics?
A. Ultraviolet radiation
B. High atmospheric temperature
C. High ambient temperature
D. Damp atmosphere
Heat transfer by ______________ is almost absent in case of fluidised bed drying operation?
A. Radiation
B. Conduction
C. Convection
D. Both B. & C.
Production of a hollow product by inflation of a tube or parison is called the _______________ process?
A. Blow moulding
B. Calendaring
C. Extrusion
D. Injection
Which of the following fastening devices has a head at one end and a nut fitted to the other ?
A. Bolt
B. Stud
C. Top bolt
D. None of these
Pick out the wrong statement ?
A. The X-rays cannot be deflected by electric field unlike cathode rays
B. The intensity of X-rays can be measured by ionisation current produced due to the ionisation
of gas by X-rays
C. The quality of X-rays can be controlled by varying the anode-cathode voltage
D. Crystal structure of a material can be studied by an electron microscope
______________________ iron is produced by the annealing of white cast iron?
A. Malleable
B. Nodular
C. Ductile
D. Grey
Satellite is a _________________ material?
A. Ferrous
B. Ceramic
C. Cemented carbide
D. Non-ferrous cast alloy cutting tool
Large scale fire on fuel gas line is normally extinguished by________________?
A. Water
B. Steam
C. Foam
D. Nitrogen
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