61. The addition of antimony in tin-based alloys improves its
62. The heat treatment process applied to cold formed steel parts is
63. The softest material just next to talc in the Mho's scale is
64. __________ can replace tungsten in high speed steel,
65. Which of the following undergoes granular fracture?
66. Which of the following alloy steels has the energy saving properties making it suitable for use in electrical machines?
67. Steel tower used for the storage of oleum
68. Iron alloyed with carbon upto 2% is called
69. A suitable material of construction to use with fuming sulphuric acid is
70. Gas holder of a gobar (cowdung) gas plant is made of
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