Category: GATE Biotechnology Previous Year Papers with Solutions

Q.5 Arrange the following three–dimensional objects in the descending order of their volumes:(i) A cuboid with dimensions 10 cm, 8 cm and 6 cm(ii) A cube of side 8 cm(iii) […]

Q.4 The area of an equilateral triangle is √3. What is the perimeter of the triangle?(A) 2 (B) 4 (C) 6 (D) 8 The equilateral triangle area √3 perimeter problem […]

Q.3 For 0 ≤ 𝑥 ≤ 2𝜋, sin 𝑥 and cos 𝑥 are both decreasing functions in the interval ________. (A) (0, π/2) (B) (π/2, π) (C) (π, 3π/2) (D) […]

Q.2 “In spite of being warned repeatedly, he failed to correct his _________ behaviour.”The word that best fills the blank in the above sentence is(A) rational (B) reasonable (C) errant […]

Q.1 “When she fell down the _______, she received many _______ but little help.”The words that best fill the blanks in the above sentence are(A) stairs, stares (B) stairs, stairs(C) […]

Q.65 The dimensions and operating condition of a lab–scale fermentor are as follows:Volume = 1 LDiameter = 20 cmAgitator speed = 600 rpmRatio of impeller diameter to fermentor diameter = […]

Q.64 An industrial fermentor containing 10,000 L of medium needs to be sterilized. The initial spore concentration in the medium is 106 spores mL−1. The desired probability of contamination after […]

Q.63 In a cross-flow filtration process, the pressure drop (ΔP) driving the fluid flow is 2 atm, inlet feed pressure (Pi) is 3 atm and filtrate pressure (Pf) is equal […]

Q.62 Phenolic wastewater discharged from an industry was treated with Pseudomonas sp. in an aerobic bioreactor. The influent and effluent concentrations of phenol were 10,000 and 10 ppm, respectively. The […]

Q.61 Yeast biomass (C6H10O3N) grown on glucose is described by the stoichiometric equation given below: C6H12O6 + 0.48 NH3 + 3 O2 → 0.48 C6H10O3N + 3.12 CO2 + 4.32 […]