ICAR AICE-JRF/SRF (PhD): Dairy Chemistry, Dairy Microbiology, Dairy Technology, Dairy Engineering · India · NTA for ICAR
Original practice questions written to the published syllabus · not past papersPackaging materials, forms and machines for milk and dairy products, aseptic packaging, shelf-life testing, labelling and sustainability. The agricultural engineering track (storage-engineering-packaging) covers general packaging engineering.
In the exams: ICAR AICE subject 37 Unit 2 and subject 38 Unit 3; ICAR AIEEA-PG group 17 Unit I (packaging materials, intelligent packaging, nutrition labelling); GATE XL-U Section 3
ICAR AICE-JRF/SRF (PhD) — Dairy Technology (37) and Dairy Engineering (38)
Subject 37 Unit 2: materials, selection, testing, adhesives, graphics, coding and labelling, protective packaging, active packaging, dairy product packaging, MAP and CAP, shrink and stretch packaging, retort pouches, biodegradable and edible packages, distribution packaging, safety and migration. Subject 38 Unit 3: permeability and shelf life, permeability of multilayer materials and measurement methods.
How our questions for ICAR AICE-JRF/SRF spread across the units of Dairy Packaging. Difficulty: 1 easy, 32 medium, 18 hard.
| Barrier properties and permeability | 6 | |
| Testing of packaging materials | 6 | |
| Modified atmosphere, vacuum and shrink packaging | 6 | |
| Aseptic packaging and package sterilisation | 6 | |
| Materials: glass, metal, paper, plastics, laminates | 5 | |
| Active and intelligent packaging | 5 | |
| Pouch, bottle and carton filling of milk | 4 | |
| Migration and food-contact safety | 4 | |
| Packaging of butter, cheese, powders, ice cream and fermented milks | 3 | |
| Packaging waste, recycling and extended producer responsibility | 3 | |
| Functions of packaging | 2 | |
| Labelling and nutrition labelling | 1 |
Choose an answer, then open the working. Each explanation says why the right answer is right and why the others are not.
A pack has 0.05 m² of film with an OTR of 10 cm³/m²·day. If the product tolerates 10 cm³ of oxygen, roughly how many days does it last on oxygen grounds?
A. 20 days
Ingress = 0.05 × 10 = 0.5 cm³/day; 10 ÷ 0.5 = 20 days. 0.5 is the daily ingress; 2 and 200 slip by ten.
Further reading: Robertson, Food Packaging: Principles and Practice
A paperboard sample of 0.01 m² weighs 2.5 g. What is its grammage?
A. 250 g/m²
2.5 ÷ 0.01 = 250 g/m². The others slip by factors of ten.
Further reading: Robertson, Food Packaging: Principles and Practice
A powder pouch has 0.08 m² of film with a WVTR of 0.5 g/m²·day. How much water vapour enters in 30 days at test conditions?
B. 1.2 g
0.08 × 0.5 × 30 = 1.2 g. 0.04 g is per day; 12 g slips a decimal; 15 g ignores the area.
Further reading: Robertson, Food Packaging: Principles and Practice
Polystyrene is used for yoghurt cups mainly because it:
C. Thermoforms easily
PS forms well but is brittle and seldom recycled.
Further reading: Robertson, Food Packaging: Principles and Practice
Taint testing of packaging compares:
B. Product stored with and without the material
Sensory panels detect transferred odours.
Further reading: Robertson, Food Packaging: Principles and Practice
Vacuum decay and bubble emission tests detect:
D. Pack leaks
Integrity tests find holes and poor seals.
Further reading: Robertson, Food Packaging: Principles and Practice
Why is light protection critical for milk in clear bottles?
B. Retail light causes off-flavour within hours
Riboflavin-sensitised oxidation acts quickly.
Further reading: Robertson, Food Packaging: Principles and Practice
Aseptic packaging allows paperboard packs for UHT milk because:
B. The pack is not heated with the product
Only product and pack are sterilised separately.
Further reading: Robertson, Food Packaging: Principles and Practice
Freezer burn on ice cream results from:
A. Moisture loss by sublimation
Packs must limit water vapour loss.
Further reading: Robertson, Food Packaging: Principles and Practice
An oxygen indicator in a MAP pack changes colour to show:
C. A leak
Oxygen entering signals failed integrity.
Further reading: Robertson, Food Packaging: Principles and Practice
Ten here, 51 in the app. The Laisha app has every practice question we have written to ICAR AICE-JRF/SRF in this subject, marked as you go, with timed papers, a jump-to-unanswered list and a certificate when you pass at 70 per cent.
Free for ten days, then one subscription of US$10 a month. We would rather say so here than have you find it later.
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