GATE BT exam:gate PYQs & Answers — Page 13

Questions 121–130 of 650. Imported answers require independent review unless marked reviewed.

Topic practice 650 questionsPage 13 of 65

Which of the following amino acids contain(s) two chiral carbons?

Your answerSelect all correct options. You can choose more than one.

L-Leucine

L-Threonine

L-Isoleucine

L-Asparagine

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A binary mixture of benzene and toluene under vapour-liquid equilibrium at 80 °C follows ideal Raoult’s law. At this condition, the saturation pressures of benzene and toluene are 101 kPa and 40 kPa, respectively. If the mole fraction of benzene in the liquid phase is 0.6, the corresponding mole fraction of benzene in the vapour phase will be ______.

(Round off to two decimal places)

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In a fermentation process, each mole of glucose is converted to biomass (CH₁.₈O₀.₅N₀.₂), with a biomass yield coefficient of 0.4 C-mol/C-mol, according to the unbalanced equation given below.

C₆H₁₂O₆ + NH₃ + O₂ → CH₁.₈O₀.₅N₀.₂ + CO₂ + H₂O

The moles of oxygen consumption per mole of glucose consumed during fermentation is ________.

(Round off to two decimal places)

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Let

and define

for all positive integers

. The least value of

for which

is _____.

(Answer in integer)

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The percentage of light that would pass through a sample with an absorbance of 2 would be ______ %.

(Round off to the nearest integer)

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A hot, freshly-sterilised fermentation medium is cooled in a double-pipe heat-exchanger. The medium enters the inner pipe of the exchanger at 95 °C and leaves the exchanger at 40 °C. Cooling water, flowing counter-currently to the medium, enters the annulus of the exchanger at 15 °C and leaves the exchanger at 45 °C. The overall heat transfer coefficient is 1350 W m

°C

. The rate of heat transfer per unit area will be ______ W/m².

(Round off to the nearest integer)

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A 2 L bioreactor is being operated as a chemostat, at a flow rate of 0.8 L/h and sterile feed of 10 g/L substrate. The bacterial growth follows Monod kinetics at a maximum specific growth rate of 0.6 h

with a Monod constant of 0.5 g/L and a biomass yield coefficient of 0.4 g/g.

The exit biomass concentration is ______ g/L.

(Round off to one decimal place)

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Let

. If the eigenvalues of

are −2, 1, and 2, then the value of

is _____________.

(Answer in integer)

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An NMR spectrometer operating at proton resonance frequency (ν) of 1 GHz will have a magnetic field strength of ________ Tesla (T).

The gyromagnetic ratio for proton, γ = 2.675 × 10

(Round off to one decimal place)

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For the coupled reactions given below

Glucose 6-phosphate + H

O → Glucose + P

(Reaction 1) ATP + Glucose → ADP + Glucose 6-phosphate (Reaction 2)

the standard free energy change of ATP hydrolysis at 25 °C is ____ kJ/mol. The equilibrium constants for Reaction 1 and Reaction 2 are 360 and 800, respectively. Gas constant R = 8.314 J mol

(Round off to two decimal places)

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GATE BT exam:gate PYQs

Question 56

Question 57

Question 58

Question 59

Question 60

Question 61

Question 62

Question 63

Question 64

Question 65