Rubber
Lead
Glass
Nickel
✅ The correct answer is option D.
Materials and Construction MCQs
High speed cutting tool steels contain about __________ percent of tungsten.
6-Aug
18-20
30-35
50-55
✅ The correct answer is option B.
Which of the following alloy steels is the most suitable for making gun barrels and projectiles?
Tungsten steel
Molybdenum steel
Nickel-chrome steel
Cobalt steel
✅ The correct answer is option C.
The process of heating the cold pressed metallic powder is called __________ in powder metallurgy.
Precipitation
Fusion
Sintering
Agglomeration
✅ The correct answer is option C.
Hardening of steel is not possible unless it is heated __________ critical point.
Above the highest
Above the lowest
Between the first & second
Between the second & third
✅ The correct answer is option B.
White cast iron is not
Malleable
Whitish in color
Brittle
Strong and hard
✅ The correct answer is option A.
Hydrochloric acid absorber in made of
Cast iron
Mild steel
Karbate
Stainless steel
✅ The correct answer is option C.
Galvanising is not a zinc diffusion process. A zinc diffusion process is termed as
Sheradising
Parkerising
Anodising
None of these
✅ The correct answer is option A.
Polythene (low or high density) containers are not corroded by
Sulphuric acid (10%) at room temperature
Nitric acid (95%) at room temperature
Sulphur trioxide at 60°C
Any of these
✅ The correct answer is option A.
__________ is used for determining the tensile strength of steels.
Hydraulic press
Universal testing machine
Mechanical press
None of these
✅ The correct answer is option B.