57. German silver is an alloy of
A.Silver and some impurities
B.Refined silver
C.Nickel, copper and zinc
D.Nickel and copper
58. Surveying tapes are made of a material having low coefficient of expansion and enough strength. The alloy used is
A.Silver metal
B.Invar alloy
C.Hastelloy
D.Monel metal
59. A cold chisel is made of
A.Mild steel
B.Cast iron
C.H.S.S.
D.High carbon
60. An engineer's hammer is made of
A.Cast iron
B.Forged steel
C.Mild steel
D.High carbon steel
61. Inconel is an alloy of
A.Nickel, chromium and iron
B.Nickel, copper
C.Nickel, chromium
D.Nickel, zinc
62. By severely deforming a metal in a particular direction it becomes
A.Ductile
B.Anisotropic
C.Homogeneous
D.Isotropic
63. Solder is an alloy consisting of
A.Tin, antimony, copper
B.Tin and copper
C.Tin and lead
D.Lead and zinc
Page 9 of 54