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) […]
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In Spite of Being Warned Repeatedly
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 […]
Mastering “Stairs Stares” Sentence Completion
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) […]
Scale-Up of Fermenter Agitation Speed
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 = […]
Fermentor Sterilization Holding Time Calculation
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 […]
Cross-Flow Filtration
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 […]
Chemostat Working Volume
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 […]
Glucose Requirement for Yeast Biomass Production
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 […]
Trapezoidal Rule Integration
Q.60 ∫-11 f(x) dx calculated using trapezoidal rule for the values given in the table is ________ (rounded off to 2 decimal places). x -1 -2/3 -1/3 0 1/3 2/3 […]
Standard Deviation of Casino Payout
Q.59 A new game is being introduced in a casino. A player can lose Rs. 100, break even, win Rs. 100, or win Rs. 500. The probabilities (P(X)) of each […]


