Materials And Construction - Study Mode
[#116] Hardened steel is softened by
Correct Answer
(B) Tempering
[#117] Which of the following has the poorest weldability?
Correct Answer
(D) High-carbon steel
[#118] Copper is dissolved from its ore by H 2 SO 4 in a percolation tank made of
Correct Answer
(C) Reinforced concrete lined with lead
[#119] Steel will respond to hardening by heat treatment processes, only when the minimum carbon content in it is __________ percent.
Correct Answer
(B) 0.2
[#120] Alpha iron is stable __________ °C.
Correct Answer
(B) Upto 910