Question:
Read the following sentences related to metal packaging materials.
A. Copper, as an alloying element, increases the corrosion resistance of aluminum.
B. A contour on the can lid acts like a diaphragm expanding during thermal processing and returning to a concave profile when a vacuum develops inside the can on cooling.
C. Vinyl-organosol is the universal golden coating or enamel used for a three-piece can.
D. Tinplate is a high-carbon mild steel sheet varying in thickness from around 0.15-0.5 mm with a coating of tin between 2.8 and 17 gsm (gm$^{-2}$).
E. Collapsible aluminum tubes may be used for packaging cheese spreads and sauces.
Choose the correct answer from the options given below:
Read the following sentences related to metal packaging materials.
A. Copper, as an alloying element, increases the corrosion resistance of aluminum.
B. A contour on the can lid acts like a diaphragm expanding during thermal processing and returning to a concave profile when a vacuum develops inside the can on cooling.
C. Vinyl-organosol is the universal golden coating or enamel used for a three-piece can.
D. Tinplate is a high-carbon mild steel sheet varying in thickness from around 0.15-0.5 mm with a coating of tin between 2.8 and 17 gsm (gm$^{-2}$).
E. Collapsible aluminum tubes may be used for packaging cheese spreads and sauces.
Choose the correct answer from the options given below:
A. Copper, as an alloying element, increases the corrosion resistance of aluminum.
B. A contour on the can lid acts like a diaphragm expanding during thermal processing and returning to a concave profile when a vacuum develops inside the can on cooling.
C. Vinyl-organosol is the universal golden coating or enamel used for a three-piece can.
D. Tinplate is a high-carbon mild steel sheet varying in thickness from around 0.15-0.5 mm with a coating of tin between 2.8 and 17 gsm (gm$^{-2}$).
E. Collapsible aluminum tubes may be used for packaging cheese spreads and sauces.
Choose the correct answer from the options given below:
Show Hint
Tinplate is always made from low-carbon mild steel to ensure the high ductility needed for can forming, and copper decreases aluminum's corrosion resistance.
Updated On: Aug 7, 2026
- A, C and D only
- A and C only
- D and E only
- B and E only
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept:
Metal cans, foils, and tubes are important rigid and semi-rigid packaging materials in the food industry.
Understanding their mechanical designs, surface coatings, and material properties is essential to using them safely.
Step 2: Detailed Explanation:
Let us analyze each statement:
- Statement A: Copper added as an alloying element to aluminum increases its mechanical strength, but it actually decreases its corrosion resistance by creating galvanic cells. (False)
- Statement B: Can lids feature concentric circular contours or expansion rings.
These contours allow the lid to flex outward like a diaphragm during retort heating to relieve internal pressure, and return to a flat or slightly concave profile on cooling as a vacuum forms. (True)
- Statement C: Epoxy-phenolic resins, not vinyl-organosol, are the classic "universal golden lacquers" used to coat the inside of three-piece cans. (False)
- Statement D: Tinplate is made of low-carbon (not high-carbon) mild steel sheet to maintain malleability and ductility during deep-drawing. (False)
- Statement E: Collapsible aluminum tubes are used for packaging viscous food products like cheese spreads, purees, and sauces because they provide an excellent barrier and prevent air ingress as product is extruded. (True)
Therefore, only statements B and E are correct.
Step 3: Final Answer
The correct option is (D).
Metal cans, foils, and tubes are important rigid and semi-rigid packaging materials in the food industry.
Understanding their mechanical designs, surface coatings, and material properties is essential to using them safely.
Step 2: Detailed Explanation:
Let us analyze each statement:
- Statement A: Copper added as an alloying element to aluminum increases its mechanical strength, but it actually decreases its corrosion resistance by creating galvanic cells. (False)
- Statement B: Can lids feature concentric circular contours or expansion rings.
These contours allow the lid to flex outward like a diaphragm during retort heating to relieve internal pressure, and return to a flat or slightly concave profile on cooling as a vacuum forms. (True)
- Statement C: Epoxy-phenolic resins, not vinyl-organosol, are the classic "universal golden lacquers" used to coat the inside of three-piece cans. (False)
- Statement D: Tinplate is made of low-carbon (not high-carbon) mild steel sheet to maintain malleability and ductility during deep-drawing. (False)
- Statement E: Collapsible aluminum tubes are used for packaging viscous food products like cheese spreads, purees, and sauces because they provide an excellent barrier and prevent air ingress as product is extruded. (True)
Therefore, only statements B and E are correct.
Step 3: Final Answer
The correct option is (D).
Was this answer helpful?
0
0
Top ICAR AIEEA Dairy Technology Questions
- As per legal standards (FSSR, 2011), the acidity (%LA) of chakka should not be more than:
- Which of the following food additive is permitted as preservative in paneer?
- Given below are four statements:
Statement (I) : Homogenisation breaks down fat globules in milk into smaller entities.
Statement (II) : Homogenisation breaks down fat globules and casein micelles in milk into smaller entities.
Statement (III) : Homogenisation slightly increases viscosity of milk.
Statement (IV) : Homogenisation improves the appearance of milk.
In light of the above statements, choose the most appropriate answer from the options given below. - With regard to temperature of operation, place the following unit operations in sequence in an increasing order of temperature:
(i) Sterilisation
(ii) Thermisation
(iii) Homogenisation
(iv) Bactofugation and
(v) HTST pasteurization.
Choose the correct answer from the options given below : - “Narampak” and “karapak” refer to varieties of sandesh with reference to which of the following parameters ?
View More Questions
Top ICAR AIEEA Food Safety Questions
- Which of the following is not used as sterilants for membranes ?
- Which of the following is the system that relies on process controls to minimize food safety risks in the dairy processing industry?
- Which of the following is a correct abbreviation for SCADA?
- Which of the following is a correct abbreviation for OPRP?
- Which of the following packaging forms is referred to as "3D packaging and food service article that is manufactured from an aqueous slurry of cellulosic fibres and formed into discrete products on screened moulds"?
View More Questions
Top ICAR AIEEA Questions
- Which of the following statements is false?
- Which of the following is an example of an inventory?
- According to Adam Smith, productivity gains could be brought about through .
- The supply curve for an artificially scarce good is .
- Which of the following would not be considered an opportunity cost of paid employment?
View More Questions