A. Has decreased plasticity at increasing temperature
B. Cannot be moulded
C. Easily deform under pressure at high temperature
D. None of these
Related Mcqs:
- Thermosetting resins are those polymers, which__________________?
A. Do not increase in plasticity with rise in temperature
B. Allow slip to occur between molecules
C. Do not take on a permanent set
D. None of these - _____________ moulding process cannot be used for thermoplastic plastics?
A. Compression
B. Extrusion
C. Injection
D. None of these - Thermosetting polymers are_________________?
A. Injection moulded
B. Cast molded
C. Extruded
D. None of these - Plasticisers are added to polymers to improve their____________________?
A. Tensile strength
B. Softness & flexibility
C. Acid resistance
D. Alkali resistance - Hydrocyanic acid is not shipped in______________?
A. Cast iron vessels
B. Steel cylinders
C. Aluminium containers
D. Monel drums - Wrought iron is ____________________?
A. High carbon iron
B. Highly resistance to acid corrosion
C. Malleable & ductile; and hence is used for chain links, hooks & couplings
D. An alloy of iron, chromium & carbon - 18-4-1 high speed steel contains 18%, 4% and 1% respectively of____________________?
A. Tungsten, vanadium and chromium
B. Tungsten, chromium and vanadium
C. Vanadium, chromium and tungsten
D. Chromium, tungsten and vanadium - Bronze is an alloy of copper and _________________?
A. Lead
B. Tin
C. Nickel
D. Zinc - Babbitt metals used for making bearings are _________________?
A. Tin or lead based alloys
B. Short of antifrictional properties
C. Having homogenous microstructure
D. Yellow metals - In hot wire anemometer used for gas flow measurement, the wire is normally made of ______________________?
A. Copper
B. Platinum
C. Constantan
D. Chromium
