Q.1
______ is added to aluminum alloys to reduce the coefficient of expansion.
  • a) Zinc
  • b) Chromium
  • c) Nickel
  • d) Manganese
Q.2
________ is added to aluminum alloys to increase Young’s modulus.
  • a) Chromium
  • b) Magnesium
  • c) Boron
  • d) Lithium
Q.3
Which of the following metal is not used in food packaging?
  • a) Aluminum
  • b) Iron
  • c) Tin
  • d) Chromium
Q.4
Steel and aluminum are primary materials for metal packaging.
  • a) True
  • b) False
Q.5
Beverage cans are usually produced from steel.
  • a) True
  • b) False
Q.6
________ is used as protective layer for steel.
  • a) Chromium
  • b) Aluminum
  • c) Boron
  • d) Iron
Q.7
Tin is used as a protective layer in steel.
  • a) True
  • b) False
Q.8
A metal can is a ________ package.
  • a) primary
  • b) secondary
  • c) tertiary
  • d) quaternary
Q.9
__________ is added to aluminum to improve strength of the alloy.
  • a) Titanium
  • b) Chromium
  • c) Magnesium
  • d) Tin
Q.10
The aluminum-copper alloys typically contain between ______% copper.
  • a) 15-30
  • b) 15-20
  • c) 10-20
  • d) 2-10
Q.11
Copper increases the hardness of alloys.
  • a) True
  • b) False
Q.12
_______ increases susceptibility of the alloys to Stress corrosion cracking.
  • a) Silicon
  • b) Lead
  • c) Iron
  • d) Zinc
Q.13
Chromium is added to aluminum alloy to __________
  • a) prevent recrystallisation
  • b) increase impact strength
  • c) increase abrasion resistance
  • d) prevent cracking
Q.14
Zirconium is added to aluminum to form a fine precipitate of intermetallic particles.
  • a) True
  • b) False
Q.15
Addition of ______ to aluminum improves fluidity.
  • a) vanadium
  • b) silicon
  • c) manganese
  • d) copper
0 h : 0 m : 1 s