1. The chief chemical property of aluminium is that it is
Soft.
2. Gun metal is an alloy of copper,
tin and zinc.
3. Generally, bearing bushes are made of
Gun metal.
4. The chief alloying elements of stainless steel are
Chromium and nickel.
5. The filaments of lamp bulbs are made of
Tungsten.
6. The alloys "Duralumin" and "Hindalium" contain 95% of
Aluminium.
7. Muntz metal is an alloy of
Copper and zinc.
8. Monel metal contains
Nickel and copper.
9. Which one of the following characteristics about tin is correct ?
Tin is corrosion resistant metal.
10. Cast iron is used for manufacturing machine beds because
it can resist more compressive stress.
11. Brass is an alloy of
Copper and zinc.
12. Aluminium in its pure form is not used for engineering work because
It lacks strength.
13. Which among the following is the lightest metal?
Aluminium.
14. White metal is an alloy of
Copper, lead, tin and antimony.
15. Galvanized iron is coated with
Lead .
16. Carbon content in cold chisel is
1.0 to 1.2%.
17. Desirable hardness in a file is generally
60 HRC.
18. Bronze is an alloy of
Copper and tin.
19. The property by which metal can be rolled into sheet is
Malleability.
20. Crane hooks are made of
Wrought iron.
21. Which one of the following metals is corrosion resistant ?
Tin.
22. Which one of the following alloys can resist saltwater corrosion .
Zinc alloy.
23. Which one of the following is a chemical property of metal ?
Corrosiveness.
24. Which one of the following properties offers resistance to abrasion ?
Hardness.
25. Which one of the following groups of properties enables the manufacture of chain
links from wrought iron?
Malleability, ductility and toughness.
26. Increase of carbon content in steel results in
Increase in hardness.
27. Which one of the following is the capacity of a metal to withstand destruction under the
action of external loads ?
Strength.
28. Which one of the following is the resistance of a metal to elastic deformation ?
Stiffness.
29. Which one among the following properties of a metal is the power of return to its original shape after deformation when the load is removed ?
Elasticity.
30. Which one of the following properties of a metal has the ability to change its shape without destruction under the influence of external forces ?
Plasticity.
31. Which one among the following properties of a metal is the property by which resistance is offered to fracture by repeated bending or twisting ?
Toughness.
32. Which one of the following properties is most essential for the metals in the process of casting, welding, brazing and soldering ?
Fusibility .
33. Metals possess physical and mechanical properties. Which one of the following is a physical property of metals ?
Fusibility.
34. Rust is formed from iron and which other element?
Oxygen.
35. Which of these metals is liquid at room temperature?
Mercury.
Soft.
2. Gun metal is an alloy of copper,
tin and zinc.
3. Generally, bearing bushes are made of
Gun metal.
4. The chief alloying elements of stainless steel are
Chromium and nickel.
5. The filaments of lamp bulbs are made of
Tungsten.
6. The alloys "Duralumin" and "Hindalium" contain 95% of
Aluminium.
7. Muntz metal is an alloy of
Copper and zinc.
8. Monel metal contains
Nickel and copper.
9. Which one of the following characteristics about tin is correct ?
Tin is corrosion resistant metal.
10. Cast iron is used for manufacturing machine beds because
it can resist more compressive stress.
11. Brass is an alloy of
Copper and zinc.
12. Aluminium in its pure form is not used for engineering work because
It lacks strength.
13. Which among the following is the lightest metal?
Aluminium.
14. White metal is an alloy of
Copper, lead, tin and antimony.
15. Galvanized iron is coated with
Lead .
16. Carbon content in cold chisel is
1.0 to 1.2%.
17. Desirable hardness in a file is generally
60 HRC.
18. Bronze is an alloy of
Copper and tin.
19. The property by which metal can be rolled into sheet is
Malleability.
20. Crane hooks are made of
Wrought iron.
21. Which one of the following metals is corrosion resistant ?
Tin.
22. Which one of the following alloys can resist saltwater corrosion .
Zinc alloy.
23. Which one of the following is a chemical property of metal ?
Corrosiveness.
24. Which one of the following properties offers resistance to abrasion ?
Hardness.
25. Which one of the following groups of properties enables the manufacture of chain
links from wrought iron?
Malleability, ductility and toughness.
26. Increase of carbon content in steel results in
Increase in hardness.
27. Which one of the following is the capacity of a metal to withstand destruction under the
action of external loads ?
Strength.
28. Which one of the following is the resistance of a metal to elastic deformation ?
Stiffness.
29. Which one among the following properties of a metal is the power of return to its original shape after deformation when the load is removed ?
Elasticity.
30. Which one of the following properties of a metal has the ability to change its shape without destruction under the influence of external forces ?
Plasticity.
31. Which one among the following properties of a metal is the property by which resistance is offered to fracture by repeated bending or twisting ?
Toughness.
32. Which one of the following properties is most essential for the metals in the process of casting, welding, brazing and soldering ?
Fusibility .
33. Metals possess physical and mechanical properties. Which one of the following is a physical property of metals ?
Fusibility.
34. Rust is formed from iron and which other element?
Oxygen.
35. Which of these metals is liquid at room temperature?
Mercury.
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