2064. German silver used for decorative purposes contains maximum percentage of
Silver
Copper
Zinc
Nickel
✅ The correct answer is option B.
2030. Inconel is an alloy of
Tin, zinc and nickel
Iron, nickel and chromium
Copper and nickel
Copper and tin
✅ The correct answer is option B.
2032. Failure of a material is termed as fatigue failure, if it fails below the yield point. The resistance to fatigue failure of a material is measured by the
Ultimate tensile strength (U.T.S.)
Endurance limit
Elastic limit
None of these
✅ The correct answer is option B.
2034. In the Kraft process of sulphate paper pulp manufacture, the black liquor and the white liquor storage tank is made of
Concrete
Wood
Steel
Porcelain
✅ The correct answer is option C.
2036. Ceramic recuperators are generally made of
Silicon carbide
Calcium carbide
Fireclay bricks
High alumina bricks
✅ The correct answer is option A.
2038. Which of the following exercises most powerful influence on the mechanical properties of steel?
Manganese
Carbon
Phosphorous
Silicon
✅ The correct answer is option B.
2040. The crystal structure of most of the common metals is
Orthorhombic
Cubic
Hexagonal
None of these
✅ The correct answer is option B.
2043. Thermoplastic resins are those polymers, which
Has decreased plasticity at increasing temperature
Can not be moulded
Easily deform under pressure at high temperature
None of these
✅ The correct answer is option C.
2045. Which of the following crystal structures characterises the austenitic stainless steel?
Simple hexagonal
Body centred cubic
Face centred cubic
None of these
✅ The correct answer is option C.
2047. High speed steel should have high
Toughness
Wear resistance
Hardenability
Both B & C
✅ The correct answer is option D.