SOME IMPORTANT QUESTION OF METALS
SOME IMPORTANT QUESTION OF METALS
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SOME IMPORTANT QUESTION OF METALS
A Yellow
B Whitish grey
C Reddish
D Silvery white
2. Which ore produces lead metal?
A Pyrites
B Malachite
C Bauxite
D Galena
3. What is the name of metal alloy of lead, tin, copper and antimony?
A Bronze
B Babbitt metal
C Gilding metal
D Leaded bronze
4. What is the ratio of copper and zinc in "Muntz metal” ?
A 63:37
B 57:43
C 60:40
D 70:30
5. Which metal is extracted from bauxite ore?
A Zinc
B Copper
C Brass
D Aluminium
6. Which metal is used in the preparation of paint?
A Zinc
B Brass
C Lead
D Aluminium
7. What is the name of copper ore?
A Galena
B Bauxite
C Blende
D Malachite
8. Which are the alloys of brass metal?
A Copper and tin
B Copper and zinc
C Copper and lead
D Copper and nickel
9. Which non ferrous metal is used to make bearing?
A Tin
B Chromium
C Nickel
D Babbitt metal
10. Which type of bronze metal has got excellent antifriction properties?
A Low tin bronze
B Leaded bronze
C Phosphor bronze
D Leaded gun metal
11. Which ore is used for extraction of aluminium?
A Pyrites
B Blends
C. Galena
D. Bauxite
12. What is the composition of leaded gunmetal?
A Copper 90%, lead tin 5%
B Copper 94%, lead 4%, tin 2%
C Copper 88%, zinc 2%, tin 10%
D Copper 85%, lead 5%, zinc 5%, tin 5%
13. What is the percentage of lead in leaded bronze bearing material?
A 15%
B 24%
C 20%
D 30%
14. Which metal is basically an alloy of copper and tin?
A Lead
B Muntz
C Brass
D Bronze
15. Why aluminium is used widely in aircraft industries?
A Light weight
B Soft and ductile
C Low tensile strength
D Thermal conductivity
16. What is the percentage of copper in malachite ore?
A 20%
B 55%
C 30%
D 80%
17. Why copper is extensively used in electrical cables and appliances?
A Ductile metal
B Easy soldering
C Cheap in cost
D Good conductor
18. Which metal is extracted from cassiterite?
A Tin
B Copper
C Lead
D Aluminium
19. Which metal is used to make soldering iron?
A Bronze
B Brass
C Lead
D Copper
20. What is the melting point of aluminium?
A 440 °C
B 880 °C
B 660 °C
D 770 °C
21. Which metal has high electrical and thermal conductivity?
A Tin
B Aluminium
C Lead
D Zinc
22. Which metal is very widely used in air craft and fabrication work because of its lightness?
A Iron
B Bronze
C Brass
D Aluminium
23. Which metal is a good insulator against nuclear radiation?
A Lead
B Copper
C Tin
D Zinc
24. Which metal is resistant to sulphuric acid and hydro chloric acid?
A Tin
B Copper
C Lead
D Aluminium
25. Which metal is an alloy of lead, tin, copper and antimony?
A Babbitt metal
B Gun metal
C Bronze
D Muntz metal
26. Which ore produces zinc?
A Bauxite
B Galene
C Calamine or blende
D Cassiterite or tinstone
27. What is the composition of copper and zinc in gilding metal?
A Copper 70% zinc 30%
B Copper 58% zinc 39%
C Copper 60% zinc 40%
D Copper 95% zinc 5%
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