Engineering Materials Mcqs
Q.1: Pick up the wrong statement?
A. aluminium in steel results in excessive grain growth4
B. manganese in steel induces hardness#
C. nickel and chromium in steel help in raising the elastic limit and improve the resilience and ductilityg
D. tungsten in steels improves magnetic properties and hardenabilityA
Q.2: Bell metal contains_____________________?)
A. 70% copper and 30% zinc
B. 90% copper and 10% tin
C. 85-92% copper and rest tin with little lead and nickel6
D. 70-75% copper and rest tin
Q.3: The correct sequence for descending order of machinability is _____________________?T
A. grey cast iron, low carbon steel, wrought iron.
B. low carbon steel, grey cast iron, wrought iron.
C. wrought iron,low carbon steel, grey cast iron-
D. wrought iron, grey cast iron, low carbon steel.
Q.4: Aluminium bronze contains aluminium and copper in the ratio of___________________?R
A. 50 : 50
B. 40 : 60
C. 60 : 40
D. 10 : 90
Q.5: Muntz metal contains copper and zinc in the ratio of________________?E
A. 50 : 50
B. 40 : 60
C. 60 : 40
D. 20 : 80
Q.6: Perminvar alloy having constant permeability is an alloy of________________?L
A. nickel, copper and iron
B. nickel, copper and zinc
C. copper, nickel and antimony
D. iron, zinc and bismuth
Q.7: Monel metal contains_________________?&
A. 63 to 67% nickel and 30% copper
B. 88% copper and 10% tin and rest zinc$
C. alloy of tin, lead and cadmium
D. malleable iron and zinc
Q.8: DuraJomin contains___________________?&
A. 94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe3
B. 92.5% aluminium, 40% copper, 2% nickel, and 1.5% Mg3
C. 10% aluminium and 90% copper
D. 90% magnesium and 9% aluminium with some copper/
Q.9: Phosphor bronze contains____________________?-
A. 0.5% of phosphorous
B. 1% phosphorous
C. 2.5% phosphorous
D. 5% phosphorous
Q.10: Delta metal is an alloy of__________________?-
A. copper, zinc and iron
B. iron, nickel and copper
C. iron, lead and tin
D. iron, aluminium and magnesium

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