LAISHA
Open Laisha

ICAR AIEEA-PG Human Nutrition & Dairy in the Diet: practice questions

ICAR AIEEA-PG: Dairy Science (group 16) and Dairy Technology (group 17) · India · NTA for ICAR

Original practice questions written to the published syllabus · not past papers
10worked here, free
63written to this exam in this subject
9syllabus units

What this subject covers

Nutrient needs, the place of milk in diets across life stages, lactose intolerance and milk allergy, and dairy in public health programmes.

In the exams: ICAR AICE subject 37 Unit 6; GATE XL-U Section 1 (nutrition); ICAR AIEEA-PG group 18 Unit I

Where the 63 questions fall

How our questions for ICAR AIEEA-PG spread across the units of Human Nutrition & Dairy in the Diet. Difficulty: 12 easy, 51 medium, 0 hard.

Lactose intolerance and its management8
Malnutrition, school milk and fortification programmes8
Macronutrients and energy requirements7
Recommended dietary allowances7
Protein quality: biological value, PER and DIAAS7
Calcium, vitamin D and bone health7
Milk and dairy in infant, child, adult and elderly diets7
Cow's milk protein allergy6
Dairy fat and cardiovascular health: the evidence and its limits6

10 practice questions, worked

Choose an answer, then open the working. Each explanation says why the right answer is right and why the others are not.

1 · Recommended dietary allowances · easy

The estimated average requirement (EAR) of a nutrient is the intake that:

  1. Meets the needs of 97–98% of individuals
  2. Is the highest intake unlikely to cause harm
  3. Meets the needs of half the healthy individuals in a group
  4. Is observed in apparently healthy people when no requirement can be set
Answer and working

C. Meets the needs of half the healthy individuals in a group

EAR = median requirement. RDA/RNI covers 97–98%; UL is the upper safe level; AI is used when an EAR cannot be set.

Further reading: Institute of Medicine, Dietary Reference Intakes

2 · Recommended dietary allowances · easy

An adequate intake (AI) is set when:

  1. A nutrient is known to be toxic at any level of intake above zero
  2. Evidence is too weak to set an average requirement
  3. The RDA has been shown to be too low
  4. A nutrient has no known function
Answer and working

B. Evidence is too weak to set an average requirement

AIs rest on observed intakes of apparently healthy groups and carry more uncertainty than RDAs.

Further reading: Institute of Medicine, Dietary Reference Intakes

3 · Calcium, vitamin D and bone health · medium

Spinach contains much calcium yet supplies little absorbable calcium because it is rich in:

  1. Lactose
  2. Vitamin D
  3. Casein phosphopeptides
  4. Oxalate
Answer and working

D. Oxalate

Oxalate binds calcium into insoluble salts. Lactose and casein phosphopeptides, if anything, aid absorption.

Further reading: Gibney et al., Introduction to Human Nutrition

4 · Calcium, vitamin D and bone health · medium

The standard blood marker of a person's vitamin D status is:

  1. 1,25-dihydroxyvitamin D
  2. Parathyroid hormone
  3. Serum calcium
  4. 25-hydroxyvitamin D
Answer and working

D. 25-hydroxyvitamin D

25(OH)D reflects intake and skin synthesis; 1,25(OH)₂D is tightly regulated and a poor marker of status.

Further reading: Gibney et al., Introduction to Human Nutrition

5 · Milk and dairy in infant, child, adult and elderly diets · medium

Whey protein is often chosen to help preserve muscle in older people because it is rich in:

  1. Lactose
  2. Glycine
  3. Saturated fat
  4. Leucine
Answer and working

D. Leucine

Leucine triggers muscle protein synthesis; whey is rapidly digested and leucine-rich.

Further reading: PROT-AGE Study Group (2013)

6 · Milk and dairy in infant, child, adult and elderly diets · medium

During adolescence, calcium needs are at their highest because:

  1. Calcium absorption stops completely
  2. Bone mineral is accrued faster than at any other age
  3. Muscles store most of the body's calcium
  4. Kidneys excrete no calcium at this age
Answer and working

B. Bone mineral is accrued faster than at any other age

Around a quarter or more of adult bone mineral is laid down in the two years around the growth spurt.

Further reading: Gibney et al., Introduction to Human Nutrition

7 · Lactose intolerance and its management · medium

The symptoms of lactose intolerance arise mainly because undigested lactose in the colon:

  1. Triggers IgE antibodies on mast cells
  2. Draws in water and is fermented to gas and acids
  3. Is absorbed and converted to toxic galactose
  4. Blocks the absorption of fat in the small intestine
Answer and working

B. Draws in water and is fermented to gas and acids

Osmotic water and fermentation gases (H₂, CO₂, CH₄) cause bloating, pain and diarrhoea. IgE is the mechanism of allergy, not intolerance.

Further reading: Gibney et al., Introduction to Human Nutrition

8 · Dairy fat and cardiovascular health: the evidence and its limits · medium

In controlled feeding trials, cheese raises LDL cholesterol less than butter providing the same amount of milk fat. This is attributed to:

  1. The food matrix
  2. Cheese fat being mostly polyunsaturated
  3. Cheese containing no saturated fat
  4. Butter containing more lactose than cheese
Answer and working

A. The food matrix

Calcium binding of fatty acids, retained MFGM and fermentation are proposed explanations; the fatty acids themselves are similar.

Further reading: Feeney et al. (2018) and related trials

9 · Dairy fat and cardiovascular health: the evidence and its limits · medium

Whole cow milk contains roughly how much cholesterol per 100 mL?

  1. About 14 mg
  2. About 140 mg
  3. About 1.4 g
  4. None
Answer and working

A. About 14 mg

About 10–15 mg/100 mL; butter and cream contain far more.

Further reading: Food composition tables

10 · Malnutrition, school milk and fortification programmes · medium

Which design issue is most critical to food safety in a school milk programme using fresh pasteurised milk?

  1. The colour of the packaging
  2. The number of school days per year
  3. Maintaining the cold chain from dairy to school
  4. Using only flavoured milk
Answer and working

C. Maintaining the cold chain from dairy to school

Fresh milk must stay chilled; failures of cold chain or reconstitution hygiene have caused outbreaks. UHT milk avoids the need for refrigeration.

Further reading: FAO school milk guidance

Ten here, 63 in the app. The Laisha app has every practice question we have written to ICAR AIEEA-PG 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.

Practise the full set in Laisha →

Read the subject

Human Nutrition & Dairy in the DietThe full study manual, free ICAR AIEEA-PGFormat, sections and how it has changed

More ICAR AIEEA-PG practice

Starter Cultures & Lactic Acid BacteriaDairy Pathogens, Toxins & Microbial RiskMicrobiology of Raw & Market MilkChemistry of Dairy ProductsInfant Formula & Nutritional Dairy ProductsLactose, Milk Salts & VitaminsDairy Analysis & Instrumental MethodsMilk Proteins & EnzymesEngineering Fundamentals for Dairy TechnologistsMicrobiology of Dairy ProductsMilk LipidsProbiotics, Prebiotics & Functional Dairy FoodsDairy Colloids: Emulsions, Foams & GelsGeneral MicrobiologyFluid Flow, Thermodynamics & Heat Transfer in Dairy PlantsMilk Composition & Physical PropertiesSensory Evaluation & Judging of Dairy ProductsBiochemistry for Dairy ScienceComputing, Data & Digital Tools for DairyDairy Animal ScienceDairy Plant Design, Layout & Project EngineeringMarket Milk ProcessingDairy Industry & Milk Production SystemsCream, Butter, Ghee & Milk Fat Products

Human Nutrition & Dairy in the Diet for other exams

GATE · IndiaICAR AICE-JRF/SRF · India

Ask Laisha about this

Opens Laisha's chat with your question ready to send. Sign in or start free.