1) The filaments of lamp bulbs are made of
Nickel
Chromium
Tin
Tungsten
2) Which one of the following is a chemical property of metal?
Elasticity
Hardness
Corrosiveness
Conductivity
3) The alloys “Duralumin” and “Hindalium” contain 95% of
Zinc
Aluminum
Soda water
Copper
4) Muntz metal is an alloy of
Copper and zinc
Copper and aluminum
Copper and nickel
Copper and tin
5) Which of the following metals can be found in a pure state in nature?
Lithium
Iron
Gold
Aluminum
6) Which one of the following characteristics about tin is correct?
Tin can withstand high temperature
Tin is the main constituent of most solders
Tin is a very good conductor of electricity
Tin is corrosion-resistant metal
7) Cast iron is used for manufacturing machine beds because
it is a cheaper metal
it is heavy in weight
it is a brittle metal
it can resist more compressive stress
8) Brass is an alloy of
Copper and silver
Lead and tin
Copper and zinc
Copper and tin
9) Aluminium in its pure form is not used for engineering work because
It is very light
It is costly
It is brittle
It lacks strength
10) Which among the following is the lightest metal?
Copper
Lead
Tin
Aluminum
11) White metal is an alloy of
Copper and tin
Copper, lead, tin, and antimony
Copper, zinc, and tin
Copper, zinc, tin, and antimony
12) Galvanized iron is coated with
Copper
Zinc
Lead
Tin
13) Desirable hardness in a file is generally
30 HRC
45 HRC
60 HRC
80 HRC
14) Bronze is an alloy of
Copper and lead
Lead and tin
Copper and tin
Copper and zinc
15) The property by which metal can be rolled into a sheet is
Ductility
Malleability
Elasticity
Tenacity
16) Crane hooks are made of
Cast iron
High carbon steel
Wrought iron
Cast steel
17) Which one of the following metals is corrosion-resistant?
Copper
Mild steel
Aluminum
Tin
18) Which one of the following alloys can resist saltwater corrosion?
Gunmetal
Nickel-chrome alloy
Zinc alloy
Brass
19) Which one of the following properties offers resistance to abrasion?
Ductility
Toughness
Malleability
Hardness
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