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Material Science

Workshop Calculation and Science, Module-3

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By Roni
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Material Science

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Q1: Which one is non-metal?

  • Mercury
  • Graphite
  • Brass
  • Iron

Q2: Which metal contains iron as a major content?

  • Brass
  • Bronze
  • Zinc
  • Ferrous metal

Q3: What is the name of the metal which does not contain iron?

  • Ferrous metals
  • Non-ferrous metals
  • Insulating metals
  • Non-Insulating metals

Q4: Which one of the following properties is the mechanical property of metal?

  • Fusibility
  • Ductility
  • Corrosion
  • Structure
Show Explanation

Ductility is a mechanical property; it defines the ability to be drawn into wire or stretched into thin sheets without breaking.

Q5: Which is a brittle metal?

  • Cast iron
  • Steel
  • Mild steel
  • Alloy steel
Show Explanation

Cast iron is brittle and breaks easily under impact.

Q6: Which mechanical property of a metal offers resistance to elastic deformation in a cutting tool?

  • Ductility
  • Malleability
  • Hardness
  • Toughness

Q7: Which property of material enables formation of permanent deformation without fracture?

  • Elasticity
  • Plasticity
  • Ductility
  • Brittleness

Q8: Which property of metal helps return to original shape after removal of force?

  • Malleability
  • Tenacity
  • Elasticity
  • Plasticity

Q9: Which property of a metal allows it to melt when heat is applied?

  • Conductivity
  • Malleability
  • Fusibility
  • Tenacity

Q10: Which alloy is used in electric lamp filament?

  • Cobalt
  • Vanadium
  • Tungsten
  • Silicon

Q11: What metals are contained in brass alloy?

  • Copper and aluminium
  • Copper and lead
  • Copper and zinc
  • Copper and tin

Q12: Which cast iron cannot be welded?

  • Grey cast iron
  • White cast iron
  • Malleable cast iron
  • Nodular cast iron

Q13: Which metal cannot be forged?

  • Alloy steel
  • Mild steel
  • Steel
  • Cast iron

Q14: Which metal is widely used for making casting of machinery parts?

  • Grey cast iron
  • White cast iron
  • Malleable cast iron
  • Wrought iron
Show Explanation

Grey cast iron is commonly used for machine parts due to its good castability and damping properties.

Q15: Which furnace is used to get pig iron from iron ore?

  • Reverberatory furnace
  • Electric furnace
  • Blast furnace
  • Cupola

Q16: What is the name of furnace to obtain cast iron?

  • Cupola
  • Mild steel – Blast furnace
  • Steel – Reverberatory
  • Alloy – Electric furnace

Q17: What is the other name of low carbon steel?

  • Low alloy steel
  • High alloy steel
  • High speed steel
  • Mild steel

Q18: What is the carbon percentage in medium carbon steel?

  • 0.05% to 0.15%
  • 0.15% to 0.25%
  • 0.25% to 0.50%
  • 0.50% to 1.50%

Q19: What is the carbon percentage in low carbon steel?

  • 0.02% to 0.03%
  • 0.15% to 0.25%
  • 0.25 to 0.50%
  • 0.50% to 1.50%

Q20: What is the carbon percentage in high carbon steel?

  • 0.02% to 0.03%
  • 0.15% to 0.25%
  • 0.25% to 0.50%
  • 0.50% to 1.50%

Q21: What is the ore of aluminium?

  • Hematite
  • Mallatite
  • Bauxite
  • Lemonite

Q22: Which property of a metal enables it to be drawn into wires under tension without rupture?

  • Ductility
  • Malleability
  • Hardness
  • Brittleness

Q23: Which among the following is an insulator?

  • Copper
  • Aluminium
  • Silver
  • Mica

Q24: Which rubber is used as an insulator for power cables and control wires?

  • Butyl
  • Hypalone
  • Silicon
  • Nitrite butadiene
Show Explanation

Silicon rubber is widely used for insulation in high-temperature environments.

Q25: Which alloy steel is used to make permanent magnets?

  • Silicon steel
  • Manganese steel
  • Vanadium steel
  • Cobalt steel

Q26: Which insulator is used in overhead lines?

  • Mica
  • Rubber
  • P.V.C
  • Porcelain

Q27: Which insulating material is used for making switches?

  • Porcelain
  • PVC
  • Bakelite
  • Ebonite

Q28: What is the name of the property of an insulator that should break down under high voltage?

  • Di-electric strength
  • Specific resistance
  • Mechanical strength
  • Non absorption
Show Explanation

Dielectric strength is the maximum voltage an insulator can withstand without breaking down.

Q29: Which alloy steel is used to make precision instruments?

  • Silicon steel
  • Manganese steel
  • Invar steel
  • Vanadium

Q30: Which steel is used for making files and cold chisels?

  • Low carbon steel
  • Medium carbon steel
  • High carbon steel
  • Stainless steel
Show Explanation

High carbon steel is used for making tools like files and chisels because of its hardness.

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1st year, Workshop Calculation
WS Calc ITI
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