1861. For spinning viscose rayon, the extrusion spinnerettes are made of
Platinum or gold alloys
High carbon steel
Aluminium
Nickel
✅ The correct answer is option A.
1864. DDT is shipped in
Stainless steel containers
Paper bags
Fibre drums
Either B or C
✅ The correct answer is option D.
1867. Which of the following is not an alloy of nickel and chromium?
Inconel
Hastealloy
Nimonic alloys
Duralumin
✅ The correct answer is option D.
1870. Among the tin containing alloys, __________ consumes the maximum amount of tin.
Solder
White metal
Pewter matal
Bronzes
✅ The correct answer is option A.
1872. Softness of silver can be converted into hardness by alloying it with small quantity of
Copper & nickel
Zinc
Aluminium
Tin
✅ The correct answer is option A.
1836. German silver in an alloy of
Copper, nickel and zinc
Copper, aluminium and silver
Silver, zinc and aluminium
Silver, nickel and zinc
✅ The correct answer is option A.
1838. The digester of a Gobar gas plant is a
Mild steel drum
Stainless steel vessel
Masonry well
Cast iron vessel
✅ The correct answer is option C.
1840. Cast iron and steel pipes are produced by __________ casting.
Die
Investment
Slush
True centrifugal
✅ The correct answer is option D.
1842. A material is called ‘ductile’, if it can be
Drawn into wires
Hammered to a thin sheet
Fractured without deformation
Made lustrous by heating it
✅ The correct answer is option A.
1844. __________ of a material results, when its strength is increased & ductility is decreased by heating at a relatively lower temperature after cold working.
Solid solution hardening
Screw dislocation
Strain ageing
Twinning
✅ The correct answer is option C.