Previous Year Questions (PYQ) | 2025-February | GATE Life Sciences

QUESTION ID:1

Identify the CORRECT sequence of operations for dressing of poultry.

Slaughtering and bleeding → scalding → defeathering → eviscerating → chilling

Slaughtering and bleeding → defeathering → scalding → eviscerating → chilling

Slaughtering and bleeding → eviscerating → defeathering → scalding →chilling

Slaughtering and bleeding → defeathering → eviscerating → scalding → chilling

https://triyambak.org/courses/gate-life-sciences/tpp/pyq?qid=31549&year=2025&month=February

QUESTION ID:2

Which of the following statement(s) is/are TRUE for a package of gammairradiated (7.5 kGy) whole chicken?

Nutritional quality of the product deteriorates after irradiation.

Spores of C. botulinum can survive in the irradiated product.

‘Radura’ symbol does not ensure safety of the irradiated product for consumption.

Energy needed for the irradiation process is much higher than that required for freezing of the product.

https://triyambak.org/courses/gate-life-sciences/tpp/pyq?qid=31550&year=2025&month=February

QUESTION ID:3

Match the following food products in Column I with their corresponding processes in Column II.

P-2;Q-3;R-4;S-1

P-3;Q-2;R-4;S-1

P-2;Q-4;R-1;S-3

P-2;Q-3;R-1;S-4

https://triyambak.org/courses/gate-life-sciences/tpp/pyq?qid=31551&year=2025&month=February

QUESTION ID:4

Which of the following is/are inhibitor(s) of enzymatic browning in peeled potatoes?

Citric acid

EDTA

Mannitol

Ascorbic acid

https://triyambak.org/courses/gate-life-sciences/tpp/pyq?qid=31552&year=2025&month=February

QUESTION ID:5

Match the following enzymes in Column I with their applications in Column II.

P-3;Q-1;R-2;S-4

P-4;Q-2;R-1;S-3

P-2;Q-4;R-1;S-3

P-1;Q-2;R-3;S-4

https://triyambak.org/courses/gate-life-sciences/tpp/pyq?qid=31553&year=2025&month=February

QUESTION ID:6

The F₁₂₁ value of a known microorganism with Z value of 11 °C is 2.4 min for 99.9999% inactivation. For a 12D inactivation of the said microorganism at 143 °C, the F value (in min) is _____. (rounded off to 3 decimal places)

https://triyambak.org/courses/gate-life-sciences/tpp/pyq?qid=31554&year=2025&month=February

QUESTION ID:7

In a typical grinding operation, 80% of the feed material passes through a sieve opening of 4.75 mm; whereas, 80% of the ground product passes through 0.5 mm opening. If the power required to grind 2 tonnes/h of the feed material is 3.8 kW, the work index of the material is _______. (rounded off to 2 decimal places)

https://triyambak.org/courses/gate-life-sciences/tpp/pyq?qid=31555&year=2025&month=February