NDDB and dairy cooperative recruitment

India · National Dairy Development Board; state cooperative milk federations · professional · unverified source

355practice questions written to this syllabus
10subjects

Format

Unverified. NDDB's career page links to an external portal; no selection procedure was shown when read on 3 Oct 2026.

Over the years

NDDB, its subsidiaries and cooperative federations recruit dairy technologists, engineers and quality staff, usually through written tests or interviews advertised per vacancy. Not a standing public exam.

Official source: https://www.nddb.coop/opportunities/career

Subjects this exam draws on

Dairy Industry & Milk Production Systems24 questionsEngineering Fundamentals for Dairy Technologists27 questionsComputing, Data & Digital Tools for Dairy44 questionsSensory Evaluation & Judging of Dairy Products5 questionsDairy Plant Utilities & Energy Management19 questionsDairy Plant Design, Layout & Project Engineering29 questionsDairy Effluent Treatment & Environmental Management12 questionsDairy Economics, Cooperatives & Milk Pricing92 questionsDairy Business Management & Marketing85 questionsDairy Extension, Entrepreneurship & Village Milk Systems18 questions

Five practice questions, worked

Original questions written to this exam's published syllabus and pattern. Not past papers.

1. A milk shed delivers 12 million tonnes of milk a year to a population of 50 million. What is the average availability per person per day?

  1. About 240 g
  2. About 2.4 kg
  3. About 66 g
  4. About 658 g
Answer and working

D. About 658 g

12 × 10⁹ kg ÷ 50 × 10⁶ people = 240 kg per person per year; 240 ÷ 365 = 0.658 kg = about 658 g per day. 240 g confuses the annual kilograms with daily grams; 66 g is a tenfold slip.

Dairy Industry & Milk Production Systems · World milk production by region and species: cow, buffalo, goat, sheep, camel, yak

2. On a P&ID of a pasteuriser, an instrument bubble tagged TIC-101 is a:

  1. Timer with indicating contact, circuit 101
  2. Transmitter for inline conductivity, loop 101
  3. Temperature-indicating controller in loop 101
  4. Temperature interlock check performed by an operator
Answer and working

C. Temperature-indicating controller in loop 101

In ISA-5.1 tags the first letter is the measured variable (T = temperature) and the following letters the functions (I = indicate, C = control).

Engineering Fundamentals for Dairy Technologists · Engineering drawing and reading plant drawings

3. A sheet calculates whole milk needed as =B4*(B3-B2)/(B1-B2) with B1 = 4.5, B2 = 0.05, B3 = 3.0 and B4 = 1,000. What does it return?

  1. 662.9
  2. 337.1
  3. 666.7
  4. 500.0
Answer and working

A. 662.9

1,000 × (3.0 − 0.05)/(4.5 − 0.05) = 1,000 × 2.95/4.45 = 662.9 kg. 337.1 is the skim milk; 666.7 ignores skim milk fat.

Computing, Data & Digital Tools for Dairy · Spreadsheets for plant and laboratory calculations

4. A reference sample for metal-induced oxidised flavour in milk is prepared by:

  1. Shaking warm raw milk vigorously for several minutes
  2. Boiling the milk
  3. Adding cultured buttermilk
  4. A trace of copper, then cold storage
Answer and working

D. A trace of copper, then cold storage

Copper catalyses lipid oxidation; agitation of raw milk gives rancid; boiling gives cooked; buttermilk gives acid.

Sensory Evaluation & Judging of Dairy Products · Panel selection, screening and training

5. A load of 400 kW runs at a power factor of 0.8. What apparent power does it draw?

  1. 480 kVA
  2. 500 kVA
  3. 320 kVA
  4. 400 kVA
Answer and working

B. 500 kVA

kVA = kW ÷ PF = 400 ÷ 0.8 = 500 kVA. 320 multiplies by the PF; 400 ignores it.

Dairy Plant Utilities & Energy Management · Electrical supply and power factor

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