Copper & copper-nickel alloys
Copper & iron
Iron & nickel
Tin & nickel
✅ The correct answer is option A.
Materials and Construction MCQs
Which of the following is not an alloy of copper?
Muntz metal
Admirability gun metal
German silver
Pewter metal
✅ The correct answer is option D.
Graphite is a good
Thermal & electrical insulator
Conductor of heat
Conductor of electricity
Both B & C
✅ The correct answer is option D.
Which one occupies the lowermost position in the electromotive series of metals?
Aluminium
Noble metals (Ag, Pt, Au)
Zinc
Alkali metals (K, Na, Li)
✅ The correct answer is option B.
The carbonating tower used in Solvay process of soda ash manufacture is made of
Cast iron
Stainless steel
Karbate
Lead lined steel
✅ The correct answer is option A.
Sulphuric acid is mixed with ground phosphate rock (to produce phosphoric acid) in a steel digestor lined with
Acidic refractory
Rubber
Karbate
Lead or acid-proof bricks
✅ The correct answer is option D.
Vycor, a widely used material for making ‘thermal wells’ in temperature measurement, is a
Cermet
Glass
Thermosetting plastic
Metallic alloy
✅ The correct answer is option B.
Sheardising process is used for
Surface coating
Heat treatment of high speed steel
Cold working on metals
None of these
✅ The correct answer is option A.
The temperature at which new grains are formed in the metal is called the __________ temperature.
Eutectic
Recrystallisation
Upper critical
Lower critical
✅ The correct answer is option B.
__________ is used for examining the macro-structure of a material.
Metallurgical microscope
Optical microscope
X-rays
Visual inspection by naked eye
✅ The correct answer is option D.