A. PTFE and porcelain
B. Cast iron and aluminium
C. Stainless steel and high silicon cast iron
D. None of these
Materials and Construction
Materials and Construction
A. Copper, nickel and zinc
B. Copper, aluminium and silver
C. Silver, zinc and aluminium
D. Silver, nickel and zinc
A. Decreases its tensile strength
B. Decreases its ductility
C. Increases its ductility
D. Does not affect its ductility
A. Cobalt
B. Zinc
C. Nickel
D. None of these
A. Austenitic
B. Ferritic
C. Martensitic
D. None of these
A. Ductility
B. Brittleness
C. Toughness
D. Malleability
A. Anhydrous ammonia
B. Aromatic solvents
C. Synthetic detergent solution
D. None of these
A. Dilute HCI
B. Acetic acid
C. Concentrated H2SO4
D. None of these
A. Suppresses the decomposition of Fe3C
B. Increases the formation of graphite
C. Increases the contraction of the metal
D. Reduces its fluidity
A. Harden the surface
B. Increase its glossiness and lustre
C. Prevent the action of water
D. Prevent the action of oxygen