A. Cotton, silk and paper
B. Asbestos, glass, porcelain and mica
C. Rubber and polymeric resins
D. All refractory materials
Related Mcqs:
- In the formation of cermets, the ratio of ceramic material to metallic material is usually 80:20. Which of the following is a cermet ?
A. Zirconia
B. Alumina
C. Bakelite
D. Tungsten carbide - A highly elastic material is deformed least on loading and retains its original form on removal of the load. Which of the following is the most elastic material ?
A. Steel
B. Glass
C. Rubber
D. Brass - A material in which the atoms are arranged regularly in some directions but not in others, is termed as ‘mesomorphous material’; an example of which is_________________?
A. Lead
B. Glass
C. Mica
D. Silver - The stress at which extension of the material takes place more rapidly as compared to the increase in load is termed as the _____________ point of the material?
A. Elastic
B. Ultimate
C. Yielding
D. Breaking - Which of the following is not used as a bearing material ?
A. Copper-lead alloys
B. Babbitts
C. Bronzes
D. Cermets - Which of the following is not a charge material for cupola ?
A. Limestone
B. Iron scrap
C. Iron ore
D. Pig iron - Out of the following, the most malleable material is________________?
A. Copper
B. Aluminium
C. Wrought iron
D. Lead - Which of the following relationships is correct for relating the three elastic constants of an isotropic elastic material (where, E = Young’s modulus, G = Modulus of rigidity or shear modulus v = Poisson’s ratio) ?
A. E = 2G (1 + v)
B. E = G (1 + v)
C. E = G (1 + v)/2
D. E = 2G (1 + 2v) - ________________ is the hardest material out of the following ?
A. Boron carbide
B. Tungsten carbide
C. Hardened steel
D. Silicon carbide - Which of the following material handling equipments is not suitable for moving materials in varying paths ?
A. Hand trolley
B. Belt conveyor
C. Crane
D. Truck
