A. Chemically known as Polychlorotrifluoroethylene (PTFE)
B. Having excellent chemical & high temperature resistance (upto 200°C)
C. Having elastomeric properties
D. All A., B. and C.
Related Mcqs:
- The softest material in Mho’s scale (for measuring hardness) is________________?
A. Talc
B. Gypsum
C. Rubber
D. None of these - Failure of a material is termed as fatigue failure, if it fails below the yield point. The resistance to fatigue failure of a material is measured by the__________________?
A. Ultimate tensile strength (U.T.S.)
B. Endurance limit
C. Elastic limit
D. None of these - Metal at the top of the electromotive series is________________?
A. Least active
B. Most stable
C. Most active
D. Most noble - Light weight metallic alloy used in aircraft industry is________________?
A. Aluminium
B. High silicon (14%) iron
C. Duralumin
D. Phosphor bronze - Cementite is________________?
A. Fe3C chemically
B. A compound of carbon and iron
C. Characterised by an orthorhombic crystal structure
D. All A., B. and C. - Wrought iron is a suitable material of construction for handling _____________ solutions?
A. Dilute acidic
B. Concentrated acidic
C. Alkalis & alkaline
D. None of these - Nickel as a material of construction__________________?
A. Is used as an alloying element for both ferrous & non-ferrous alloys
B. Is paramagnetic below 415° C (its Curie temperature)
C. Diamagnetic
D. Has a body centred cubic (bcc) crystal lattice structure - The material of construction of bearings is__________________?
A. Cast iron
B. Babbitt metal
C. Pig iron
D. Steel - Which of the following is the most suitable material of construction for evaporator & its tubes for concentrating NaOH solution to 70% ?
A. Cast iron
B. Steel
C. Nickel
D. Karbate - A suitable material of construction to use with fuming sulphuric acid is_________________?
A. Carbon steel
B. Stainless steel type 304
C. Nickel
D. Monel
