GATE XL 2023 Paper 1 — page 37

Questions 109–111 of 122. Imported answers require review unless explicitly marked reviewed.

Calculate the efficiency in percent (rounded off to 1 decimal place) of an oil expeller which yields 37 kg oil containing 5% solid impurities from 100 kg mustard seeds. The oil content of the mustard seed is 38%.

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Orange juice is packaged aseptically and stored under ambient conditions. The degradation of vitamin C in the juice occurs during storage and it follows first order reaction kinetics. The degradation rate constant is 5.2×10⁻³ day⁻¹. The half-life of vitamin C in days is __________ (in integer).

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The weight of 10 kg dried cauliflower containing 5% moisture (wet basis) after rehydration is 60 kg. If the fresh cauliflower contained 87% moisture (wet basis), calculate the coefficient of rehydration (rounded off to 2 decimal places).

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2023 · Paper 1

Question 109

Question 110

Question 111