A. Normalising
B. Tempering
C. Annealing
D. Carburising
Hardened steel is softened by___________________? Read More »
Materials and Construction A. Molybdenum stainless steel
B. Mild steel
C. High silicon iron (14% Si)
D. Copper
The ‘bomb’ in the bomb calorimeter is made of___________________? Read More »
Materials and Construction A. Hydraulic press
B. Universal testing machine
C. Mechanical press
D. None of these
_____________________ is used for determining the tensile strength of steels ? Read More »
Materials and Construction A. Steel
B. Karbate
C. Stainless steel
D. None of these
For storing water and acid free benzol, use a ______________ vessel? Read More »
Materials and Construction A. Molybdenum stainless steel
B. Tin
C. Mild steel
D. Aluminium
Gas holder of a gobar (cow-dung) gas plant is made of___________________? Read More »
Materials and Construction A. Wood
B. Stainless steel
C. Reinforced concrete lined with lead
D. High silicon iron (14% Si)
A. Chromium
B. Sulphur
C. Vanadium
D. Tungsten
Addition of ______________ in steel is helpful in increasing the depth of hardness? Read More »
Materials and Construction A. Machinability
B. Ductility
C. Strength
D. Hardness
Addition of nickel to copper improves its_________________? Read More »
Materials and Construction A. High speed
B. Stainless
C. Heat resisting
D. None of these
Clock pendulums are usually made of _______________ steel? Read More »
Materials and Construction A. Rusts
B. Melts
C. Is heated
D. None of these
A chemical change takes place when iron_____________? Read More »
Materials and Construction