Material Science
1. Which one is non-metal?
A : Mercury
B : Graphite
C : Brass
D : Iron
2. Which metal contains iron as a major content?
A : Brass metal
B : Bronze metal
C : Zinc
D : Ferrous metal
3. What is the name of the metal which do not contain iron?
A : Ferrous metals
B : Non-ferrous metals
C : Insulating metals
D : Non-Insulating metals
4. Which one of the following properties is the mechanical properties of metal?
A : Fusibility
B : Ductility
C : Corrosion
D : Structure
5. Which is brittle metal?
A : Cast iron
B : Steel
C : Mild steel
D : Alloy steel
6. Which mechanical property of a metal offers resistance to elastic deformation in a cutting tool?
A : Ductility
B : Malleability
C : Hardness
D : Toughness
7. Which property of material enables to formation of permanent deformation without fracture?
A : Elasticity
B : Plasticity
C : Ductility
D : Brittleness
8. Which property of metal has its power of returning to its original shape after the applied force is released?
A : Malleability
B : Tenacity
C : Elasticity
D : Plasticity
9. Which property of a metal possessed by it melts when heat is applied?
A : Conductivity
B : Malleability
C : Fusibility
D : Tenacity
10. Which alloy used in electric lamp as filament?
A : Cobalt
B : Vanadium
C : Tungsten
D : Silicon
11. What metals contained in brass alloy?
A : Copper and aluminium
B : Copper and lead
C : Copper and zinc
D : Copper and tin
12. Which cast iron cannot be welded?
A : Grey cast iron
B : White cast iron
C : Malleable cast iron
D : Nodular cast iron
13. Which metal cannot be forged?
A : Alloy steel
B : Mild steel
C : Steel
D : Cast iron
14. Which metal is widely used for making casting of machinery parts?
A : Grey cast iron
B : White cast iron
C : Malleable cast iron
D : Wrought iron
15. Which furnace is used to get pig iron from iron ore?
A : Mild steel - Rever battery
B : Electric furnace
C : Blast furnace
D : Cupola
16. What is the name of furnace to obtained cast iron?
A : Cupola
B : Mild steel - Blast furnace
C : Steel - Rever battery
D : Alloy metal - Electric furnace
17. What is the other name of low carbon steel?
A : Low alloy steel
B : High alloy steel
C : High speed steel
D : Mild steel
18. What is the carbon percentage in medium carbon steel?
A : 0.05% to 0.15%
B : 0.15% to 0.25%
C : 0.25% to 0.5%
D : 0.5% to 1.5%
19. What is the carbon percentage in low carbon steel?
A : 0.02% to 0.03%
B : 0.15% to 0.25%
C : 0.25% to 0.50%
D : 0.50% to 1.50%
20. What is the carbon percentage in high carbon steel?
A : 0.02% to 0.03%
B : 0.15% to 0.25%
C : 0.25% to 0.50%
D : 0.50% to 1.50%
21. What is the ore of aluminium?
A : Hematite
B : Mallatite
C : Bauxite
D : Lemonite
22. Which property of a metal enables it by which it can be drawn out into wires under tension without rupture?
A : Ductility
B : Malleability
C : Hardness
D : Brittleness
23. Which among the following is an insulator?
A : Copper
B : Aluminium
C : Silver
D : Mica
24. Which rubber is used as insulator for power cables and control wires?
A : Butyl
B : Hypalone
C : Silicon
D : Nitrite butadiene
25. Which alloy steel is used to make permanent magnets?
A : Silicon steel
B : Manganese steel
C : Vanadium steel
D : Cobalt steel
26. Which insulator is used in overhead lines?
A : Mica
B : Rubber
C : P.V.C
D : Porcelain
27. Which insulating material is used for making switches?
A : Porcelain
B : PVC
C : Bakelite
D : Ebonite
28. What is the name of the property of an insulation that should brake down or puncture on application of high voltage?
A : Di-electric strength
B : Specific resistance
C : Mechanical strength
D : Non absorption
29. Which alloy steel is using for making precious instrument?
A : Silicon steel
B : Manganese steel
C : Invar steel
D : Vanadium
30. Which steel is used for making files and cold chisel?
A : Low carbon steel
B : Medium carbon steel
C : High carbon steel
D : Stainless steel
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