Copper Alloys MCQ

Test your knowledge with important Copper Alloys MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more Copper Alloys MCQs on Bissoy. Bissoy App

• It is very difficult to cast pure copper metal in mould cavity because of shrinkage problems.
  ক

  True

  খ

  False
• In general, copper is highly reactive with sulphur and its chemical compounds.
  ক

  True

  খ

  False
• Castings or components of copper alloys have high machinability and recyclability.
  ক

  True

  খ

  False
• At zero level temperature of copper alloys, they become very hard and brittle in nature.
  ক

  True

  খ

  False
• Copper alloys possess good mechanical properties even at high temperatures.
  ক

  True

  খ

  False
• Copper alloys have low thermal conductivity but high electrical conductivity.
  ক

  True

  খ

  False
• Copper alloys generally have sparking nature due to its high ductility.
  ক

  True

  খ

  False
• Which of the following parts are mostly manufactured by using copper alloys?
  ক

  Pistons

  খ

  Engine blocks

  গ

  Journal bearings

  ঘ

  Aircrafts
• For protection of copper alloys from corrosion, a special type of coating is applied on it.
  ক

  True

  খ

  False
• Iron needs higher temperature ranges for its extraction.
  ক

  True

  খ

  False
• Copper alloys are mostly hot treated?
  ক

  True

  খ

  False
• What is the tensile strength of pure annealed copper?
  ক

  324 MPa

  খ

  676 MPa

  গ

  759 MPa

  ঘ

  209 MPa
• What is the tensile strength of cast manganese bronze?
  ক

  490 MPa

  খ

  759 MPa

  গ

  676 MPa

  ঘ

  324 MPa
• Which of the following materials, on adding with copper, doesn’t increase its strength?
  ক

  Cadmium

  খ

  Silver

  গ

  Sodium

  ঘ

  Aluminium Oxide
• What amount of impurity is allowed for copper to be used in electric applications?
  ক

  0.1%

  খ

  0.2%

  গ

  0.3%

  ঘ

  0.4%
• Which colour is obtained by copper alloys, when nickel is added to it?
  ক

  Red

  খ

  Blue

  গ

  Silver

  ঘ

  Yellow
• Which colour is obtained by copper alloys, when zinc is added to it?
  ক

  Red

  খ

  Blue

  গ

  Silver

  ঘ

  Yellow
• What is the density of copper alloys?
  ক

  6.67 g/cc

  খ

  7.87 g/cc

  গ

  8.93 g/cc

  ঘ

  5.77 g/cc
• What is the general density of steel?
  ক

  6.67 g/cc

  খ

  7.87 g/cc

  গ

  8.77 g/cc

  ঘ

  5.77 g/cc